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NVIDIA A100 80GB Tensor Core GPU
USD15,000
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NVIDIA H200 Tensor Core GPU
USD35,000Original price was: USD35,000.USD31,000Current price is: USD31,000. -
NVIDIA L40S
USD11,500Original price was: USD11,500.USD10,500Current price is: USD10,500. -
NVIDIA L40 GPU
Rated 5.00 out of 5USD9,500
NVIDIA DGX comparison guide: H100, H200, B200 & GB200 Comparison
DGX comparison guide: From Hopper to Blackwell and Beyond
In the rapidly accelerating world of artificial intelligence and high-performance computing, the infrastructure that powers breakthrough innovations in large language models, generative AI, scientific computing, and data analytics has undergone transformative evolution. NVIDIA DGX systems represent the pinnacle of this technological progression, delivering purpose-built, enterprise-grade AI supercomputers that integrate cutting-edge GPUs, high-bandwidth interconnects, optimized software stacks, and comprehensive support ecosystems into turnkey platforms designed to eliminate integration complexity and accelerate time-to-insight for organizations deploying AI at scale. This comprehensive guide examines the complete NVIDIA DGX portfolio spanning the Hopper architecture (DGX H100, DGX H200) through the revolutionary Blackwell generation (DGX B200, DGX GB200 NVL72), providing technical decision-makers with detailed specifications, performance comparisons, use case recommendations, and total cost of ownership analysis necessary to select optimal infrastructure for diverse AI workload requirements.
The NVIDIA DGX H100, built on the Hopper architecture and featuring eight H100 SXM5 GPUs connected via high-bandwidth NVLink, established a new performance baseline for AI training and inference when introduced, delivering 32 petaFLOPS of FP8 compute throughput and enabling organizations to train large language models with tens to hundreds of billions of parameters within practical timeframes and power budgets. Building upon this foundation, the DGX H200 AI supercomputer enhanced memory capacity and bandwidth with HBM3e technology, addressing the growing demands of trillion-parameter models and memory-intensive inference workloads that increasingly define enterprise AI applications. The transition to the Blackwell generation with the DGX B200 represents not merely incremental improvement but architectural revolution, delivering up to 144 petaFLOPS of FP4 inference performance and 72 petaFLOPS of FP8 training compute—performance gains of 2-4× compared to Hopper predecessors while introducing advanced features including second-generation Transformer Engine, fifth-generation NVLink, and dramatically improved energy efficiency that reduces total cost of ownership across multi-year deployment lifecycles.
The most ambitious implementation of Blackwell technology, the NVIDIA DGX GB200 NVL72, transcends traditional server form factors entirely, delivering an exascale-class AI supercomputer in a single liquid-cooled rack containing 36 Grace CPUs and 72 Blackwell GPUs interconnected through the largest NVLink domain ever constructed—1.8 TB/s of all-to-all GPU communication bandwidth enabling real-time inference on trillion-parameter models and training workloads previously impossible within single-rack configurations. This rack-scale architecture fundamentally reimagines AI infrastructure economics, delivering performance equivalent to hundreds of previous-generation GPUs while consuming dramatically less power, occupying minimal data center footprint, and eliminating the networking complexity, latency overhead, and reliability challenges associated with traditional multi-node cluster approaches. For organizations evaluating infrastructure investments to support next-generation AI initiatives—from enterprise custom foundation model development through production deployment of real-time inference services—understanding the technical capabilities, performance characteristics, and economic implications of each DGX platform generation is essential for making informed decisions that align computational resources with business objectives, budget constraints, and long-term strategic AI roadmaps.
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NVIDIA DGX H100: The Hopper Foundation for Enterprise AI
The NVIDIA DGX H100 established the architectural template for modern AI infrastructure, combining eight NVIDIA H100 SXM5 Tensor Core GPUs with 80GB HBM3 memory each into a unified system delivering 32 petaFLOPS of FP8 AI compute performance and 640GB total GPU memory capacity. Each H100 GPU features 16,896 CUDA cores, 528 fourth-generation Tensor Cores optimized for FP8, FP16, and FP32 mixed-precision training, and 80GB of HBM3 memory operating at 3 TB/s bandwidth per GPU—specifications that enable training of GPT-style language models with parameters ranging from 7 billion to 175 billion within days rather than weeks when compared to previous-generation infrastructure. The system architecture employs fourth-generation NVLink interconnect providing 900 GB/s bidirectional bandwidth between GPUs, creating a unified memory space that enables efficient model parallelism, pipeline parallelism, and data parallelism strategies essential for training modern transformer architectures where gradient synchronization and activation sharing between accelerators directly impacts training throughput and convergence characteristics.
Beyond raw computational specifications, the DGX H100 integrates dual Intel Xeon Platinum 8480C processors with 56 cores total, 2TB DDR5 system memory, 30TB of NVMe storage for dataset staging and checkpoint management, and eight NVIDIA ConnectX-7 network adapters supporting 400GbE or NDR InfiniBand connectivity for distributed training scenarios requiring synchronization across multiple DGX systems. The complete platform ships with NVIDIA Base Command software stack including optimized containers for PyTorch, TensorFlow, JAX, and other popular ML frameworks, enterprise management tools for job scheduling and resource allocation, and comprehensive diagnostic utilities that streamline deployment, reduce configuration time, and accelerate time-to-first-successful-training-run for organizations transitioning from experimental AI initiatives to production-scale infrastructure deployments.
DGX H100 Complete Specifications Table
| Component | Specification | Details |
|---|---|---|
| Model | NVIDIA DGX H100 | Hopper Architecture System |
| GPUs | 8× NVIDIA H100 SXM5 | 80GB HBM3 per GPU (640GB total) |
| GPU Interconnect | 4th Gen NVLink | 900 GB/s bidirectional per GPU |
| FP8 Performance | 32 petaFLOPS | AI training and inference |
| FP16 Performance | 16 petaFLOPS | Mixed-precision training |
| GPU Memory Bandwidth | 3 TB/s per GPU | HBM3 technology |
| CPUs | 2× Intel Xeon Platinum 8480C | 56 cores total |
| System Memory | 2TB DDR5 | ECC registered |
| Storage | 30TB NVMe | High-speed dataset staging |
| Network | 8× ConnectX-7 | 400GbE or NDR InfiniBand |
| Power | 10.2 kW maximum | Dual redundant PSUs |
| Form Factor | 8U rackmount | Standard 19″ rack |
| Weight | ~272 kg (600 lbs) | Fully configured |
| Operating System | DGX OS (Ubuntu-based) | Pre-configured AI stack |
DGX H100 Use Cases and Performance Characteristics
The DGX H100 excels in large language model training scenarios including GPT, BERT, T5, and similar transformer architectures with parameter counts ranging from 10 billion to 200 billion. Organizations training domain-specific models for healthcare (medical text understanding, clinical decision support), financial services (market analysis, fraud detection, risk modeling), legal applications (contract analysis, case law research), and scientific research (protein folding prediction, materials discovery) consistently report training time reductions of 50-70% compared to previous-generation DGX A100 systems, directly translating into faster experimental iteration cycles, accelerated time-to-production for commercial AI applications, and improved researcher productivity through reduced waiting time between experimental runs.
Computer vision applications including object detection, instance segmentation, pose estimation, and video understanding models benefit from the H100’s exceptional FP16 and TF32 throughput, delivering training performance improvements of 40-60% on standard benchmarks including COCO object detection, ImageNet classification, and Cityscapes semantic segmentation compared to previous-generation hardware. The substantial 80GB per-GPU memory capacity enables training with larger batch sizes, longer sequence lengths, and higher-resolution imagery without requiring complex model partitioning strategies or gradient accumulation approaches that can complicate training code and extend time-to-convergence.
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NVIDIA DGX H200: Enhanced Memory for Next-Generation AI
The NVIDIA DGX H200 AI supercomputer addresses the memory capacity and bandwidth limitations increasingly encountered in trillion-parameter model development and high-throughput inference scenarios by upgrading GPU memory from HBM3 to HBM3e technology, delivering 141GB per H100 GPU (1.13TB total system GPU memory) with 4.8 TB/s per-GPU memory bandwidth—76% more memory capacity and 43% higher memory bandwidth compared to the DGX H100. This substantial memory enhancement eliminates training bottlenecks associated with large batch size requirements, enables inference serving of models with extensive key-value caches (critical for long-context language model applications), and supports computer vision workloads processing ultra-high-resolution imagery or long video sequences that exceed the memory constraints of previous-generation systems. The H200’s architectural improvements extend beyond memory subsystem enhancements to include refined power management algorithms that improve training stability during sustained maximum-load scenarios and enhanced cooling efficiency that enables higher sustained boost clock frequencies across extended training runs.
Organizations deploying the DGX H200 report particular advantages in inference-dominated workloads where serving multiple concurrent requests for large language models, maintaining conversation context across extended multi-turn dialogues, or processing batch inference jobs with thousands of simultaneous requests benefit directly from the expanded memory capacity that enables larger key-value caching structures, reduced eviction frequencies, and improved per-request latency characteristics. Training workloads also benefit substantially, with the ability to accommodate 30-50% larger per-GPU batch sizes translating into improved GPU utilization, reduced training iteration times, and faster convergence for models where batch size directly impacts gradient estimate quality and optimization dynamics. The DGX H200 maintains complete software compatibility with DGX H100 deployments, enabling organizations to integrate H200 systems into existing DGX clusters without requiring changes to training scripts, framework configurations, or operational procedures—a critical consideration for enterprises managing heterogeneous AI infrastructure portfolios across multiple data centers and deployment scenarios.
DGX H200 vs DGX H100: Key Differences
| Feature | DGX H100 | DGX H200 | Improvement |
|---|---|---|---|
| GPU Memory per Accelerator | 80GB HBM3 | 141GB HBM3e | +76% capacity |
| Total GPU Memory | 640GB | 1.13TB | +76% capacity |
| Memory Bandwidth per GPU | 3 TB/s | 4.8 TB/s | +60% bandwidth |
| FP8 Tensor Performance | 32 petaFLOPS | 32 petaFLOPS | Equivalent |
| FP16 Tensor Performance | 16 petaFLOPS | 16 petaFLOPS | Equivalent |
| Power Consumption | 10.2 kW max | 10.2 kW max | Equivalent |
| Typical Training Performance | Baseline | 5-8% faster | Larger batch sizes |
| Inference Throughput | Baseline | 15-25% higher | Memory-bound workloads |
| Optimal Use Case | Training 10-200B param models | Training 100B-1T param models, Inference serving | Larger models, memory-intensive apps |
Organizations evaluating whether to invest in DGX H200 versus DGX H100 should consider several key decision factors. For training-dominated environments where model sizes predominantly fall below 200 billion parameters and memory capacity constraints are not regularly encountered, the DGX H100 often represents better price-performance value given typical street pricing differentials of 15-25% between platforms. Conversely, organizations focused on trillion-parameter model development, inference serving applications requiring large context windows (32K+ tokens), or computer vision workloads processing high-resolution imagery (8K video, satellite imagery, medical imaging) will find the DGX H200’s expanded memory capacity delivers tangible performance advantages and operational flexibility that justify premium pricing through reduced training times, improved inference throughput, and elimination of complex model partitioning strategies required to fit larger models within constrained memory envelopes.
Learn more: Complete H100 vs H200 Performance Comparison
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NVIDIA DGX B200: Blackwell Architecture Revolutionizes AI Performance
The NVIDIA DGX B200 represents an architectural quantum leap from Hopper to Blackwell, delivering unprecedented AI performance through eight NVIDIA B200 Tensor Core GPUs fabricated on advanced 4nm process technology and featuring 208 billion transistors per GPU—nearly double the transistor count of H100 predecessors. Each B200 GPU incorporates 18,944 CUDA cores, 592 fifth-generation Tensor Cores with enhanced support for FP4, FP6, and FP8 precision formats, and 180GB of ultra-fast HBM3e memory operating at 8 TB/s bandwidth per accelerator. The DGX B200 system delivers aggregate performance of 72 petaFLOPS for FP8 training workloads and an astonishing 144 petaFLOPS for FP4 inference operations—representing 2.25× and 4.5× improvements respectively over DGX H100 specifications and enabling training throughput gains of 2-3× on large language models, 3-5× faster inference serving for production deployments, and dramatically improved energy efficiency translating into 40-50% reductions in power consumption per training job compared to previous-generation infrastructure.
The B200’s second-generation Transformer Engine introduces groundbreaking FP4 precision support that enables aggressive quantization during inference while maintaining model accuracy within acceptable thresholds for production applications, effectively doubling inference throughput compared to FP8 approaches without requiring model retraining or complex quantization-aware training workflows. Fifth-generation NVLink delivers 1.8 TB/s bidirectional bandwidth between GPUs—double the throughput of fourth-generation implementations in DGX H100—enabling more efficient model parallelism strategies, reduced communication overhead in distributed training scenarios, and improved scaling efficiency when coordinating gradient synchronization across all eight accelerators within a single DGX B200 system. Combined with architectural improvements including enhanced memory controllers, refined GPU scheduling algorithms, and optimized data paths between compute units and memory subsystems, the DGX B200 achieves superior performance not merely through raw transistor count increases but through holistic system-level optimizations that address bottlenecks and inefficiencies identified through years of production AI workload analysis across NVIDIA’s global customer base.
NVIDIA DGX B200 Complete Specifications
| Component | Specification | Details |
|---|---|---|
| Model | NVIDIA DGX B200 | Blackwell Architecture System |
| GPUs | 8× NVIDIA B200 | 180GB HBM3e per GPU (1.44TB total) |
| Transistors per GPU | 208 billion | 4nm process technology |
| GPU Interconnect | 5th Gen NVLink | 1.8 TB/s bidirectional |
| FP4 Inference Performance | 144 petaFLOPS | Doubled inference throughput |
| FP8 Training Performance | 72 petaFLOPS | 2.25× faster than H100 |
| FP16 Performance | 36 petaFLOPS | Enhanced mixed-precision |
| GPU Memory Bandwidth | 8 TB/s per GPU | HBM3e technology |
| Total GPU Memory | 1.44TB | 125% more than H100 |
| CPUs | 2× Intel Xeon 8570 | 56 cores each (112 total) |
| System Memory | 2TB DDR5 | High-bandwidth ECC |
| Storage | 30TB NVMe | Ultra-fast dataset access |
| Network | 8× ConnectX-7 | 400GbE / NDR InfiniBand |
| Power Consumption | 14.3 kW maximum | Improved efficiency vs performance |
| Cooling | Air-cooled | Enterprise data center standard |
| Form Factor | 8U rackmount | Standard infrastructure compatibility |
DGX B200 Performance Advantages and Real-World Benchmarks
Independent benchmarking conducted across standard AI workload suites demonstrates that the DGX B200 delivers 2.5-3× faster training performance compared to DGX H100 when training large language models including Llama 70B, GPT-style architectures with 175B parameters, and Mixture-of-Experts models like Mixtral 8×7B. This performance advantage stems from three synergistic architectural improvements: enhanced FP8 Tensor Core throughput delivering 2.25× raw compute performance, expanded HBM3e memory capacity and bandwidth eliminating memory bottlenecks that previously constrained batch size selection, and fifth-generation NVLink reducing inter-GPU communication latency during gradient all-reduce operations that consume 15-30% of total training time in distributed data parallel scenarios.
Inference workloads demonstrate even more dramatic performance gains, with the DGX B200’s FP4 Tensor Core capabilities enabling up to 15× higher throughput compared to DGX H100 when serving large language model inference requests with optimized quantization strategies. Production deployments at leading cloud service providers report that transitioning inference serving infrastructure from H100-based systems to B200 equivalents reduces per-request latency by 60-75%, increases throughput capacity (requests per second per GPU) by 300-400%, and lowers per-inference costs by 70-80% when amortized across millions of daily inference requests—economic advantages that directly improve unit economics for AI-powered applications, enable more responsive user experiences, and justify infrastructure refresh investments through measurable operational cost reductions.
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NVIDIA DGX GB200 NVL72: Exascale AI in a Single Rack
The NVIDIA DGX GB200 NVL72 transcends traditional server architecture entirely, delivering what NVIDIA characterizes as “an exascale computer in a single rack”—a liquid-cooled, rack-scale system containing 36 NVIDIA Grace CPUs and 72 Blackwell GPUs interconnected through the largest unified NVLink domain ever constructed. This revolutionary architecture combines 2,592 Arm Neoverse V2 CPU cores, 13.5TB of combined HBM3e GPU memory, and 30.2TB of total fast memory (including CPU LPDDR5X) into a unified computing platform delivering aggregate performance of 1,440 petaFLOPS for FP4 inference and 720 petaFLOPS for FP8 training—computational capabilities previously requiring dozens of traditional rack configurations and consuming megawatts of power to achieve. The GB200 architecture pairs each Grace CPU with two Blackwell GPUs in what NVIDIA terms a “superchip” configuration, with 18 compute trays containing these superchips interconnected through nine NVLink switch trays that create an all-to-all communication fabric providing 1 petabyte per second of aggregate bisection bandwidth—enabling real-time inference on trillion-parameter models and training scenarios where massive inter-GPU data movement would create insurmountable bottlenecks in traditional cluster architectures.
The liquid cooling infrastructure required for GB200 NVL72 deployment represents both technical sophistication and operational consideration, with rear-door heat exchangers, facility water loop integration, and precision coolant distribution systems enabling the rack to dissipate 120 kilowatts of thermal output while maintaining optimal GPU operating temperatures under sustained maximum computational loads. While this cooling complexity exceeds traditional air-cooled infrastructure requirements, the performance density advantages are extraordinary: a single GB200 NVL72 rack delivers computational throughput equivalent to approximately 8-12 fully-populated DGX H100 racks consuming 80-120kW of power collectively—effectively providing 10× improvement in performance per watt and 8× reduction in data center footprint compared to achieving equivalent aggregate performance through traditional multi-rack cluster deployments. For hyperscale cloud providers, research institutions, and enterprise AI factories operating at massive scale, these density and efficiency advantages directly translate into capital expenditure savings (fewer racks, less networking infrastructure, reduced cooling capacity requirements), operational cost reductions (dramatically lower power consumption per FLOP), and accelerated deployment timelines (weeks to provision a single GB200 rack versus months to deploy equivalent traditional cluster capacity).
DGX GB200 NVL72 System Architecture and Specifications
| Component | Specification | Details |
|---|---|---|
| System Configuration | Rack-scale liquid-cooled | Single integrated rack |
| Grace CPUs | 36× NVIDIA Grace | 2,592 Arm Neoverse V2 cores total |
| Blackwell GPUs | 72× NVIDIA B200 | Largest NVLink domain |
| GPU Memory | 13.5TB HBM3e | 576 TB/s aggregate bandwidth |
| CPU Memory | 16.7TB LPDDR5X | Ultra-high-bandwidth |
| Total Fast Memory | 30.2TB | Combined CPU + GPU |
| FP4 Inference Performance | 1,440 petaFLOPS | 30× faster than H100 equivalent |
| FP8 Training Performance | 720 petaFLOPS | Trillion-parameter model training |
| FP64 Performance | 3,240 teraFLOPS | Scientific computing capability |
| NVLink Bandwidth | 130 TB/s per rack | Fifth-generation interconnect |
| NVLink Domain | 1 PB/s bisection bandwidth | All-to-all GPU communication |
| Power Consumption | 120 kW | Liquid cooling required |
| Cooling Method | Rear-door heat exchanger | Facility water loop integration |
| Rack Dimensions | Standard 42U | Enterprise data center compatible |
| Network | 400GbE / InfiniBand | External cluster connectivity |
| Management | Integrated BMC | Rack-level monitoring |
GB200 NVL72 Use Cases: When Rack-Scale Makes Sense
The DGX GB200 NVL72’s extraordinary capabilities and unique architectural characteristics make it ideally suited for specific high-end use cases where traditional multi-node approaches encounter fundamental limitations. Trillion-parameter model training—the next frontier in foundation model development where architectures exceed 1 trillion parameters and approach multi-trillion scales—benefits immensely from the GB200’s unified memory space and all-to-all NVLink connectivity that eliminates network-induced bottlenecks during gradient synchronization operations consuming 40-60% of total training time in conventional distributed approaches. Research organizations developing proprietary foundation models for specialized domains (scientific computing, genomics, climate modeling, materials science) report training time reductions of 50-70% compared to equivalent workloads distributed across multiple traditional DGX racks connected via InfiniBand networking, directly translating into faster experimental iteration, reduced time-to-publication for academic research, and accelerated commercialization timelines for industry applications.
Real-time inference on massive models represents another compelling GB200 application where the architecture’s unified memory and ultra-low-latency inter-GPU communication enable serving requests against trillion-parameter models with latencies measured in milliseconds rather than seconds—performance characteristics previously unattainable and enabling entirely new categories of interactive AI applications. Cloud service providers building inference-as-a-service platforms report that GB200-based infrastructure enables profitable economics for serving large models at scale, with per-request costs 80-90% lower than equivalent capacity provisioned using traditional GPU servers, operational complexity dramatically reduced through elimination of complex model partitioning and request routing logic, and user experience substantially improved through 10-20× latency reductions enabling truly conversational experiences with massive language models previously requiring seconds to generate responses.
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Performance Comparison: H100 vs H200 vs B200 vs GB200
Understanding the relative performance characteristics across the complete NVIDIA DGX portfolio requires examining both raw computational specifications and real-world performance in representative AI workloads that reflect actual production usage patterns rather than synthetic benchmarks that may not accurately represent operational scenarios.
Comprehensive DGX Comparison Table
| System | DGX H100 | DGX H200 | DGX B200 | DGX GB200 NVL72 |
|---|---|---|---|---|
| Architecture | Hopper | Hopper | Blackwell | Grace Blackwell |
| GPU Count | 8× H100 SXM5 | 8× H100 (HBM3e) | 8× B200 | 72× B200 |
| CPU Count | 2× Xeon Platinum | 2× Xeon Platinum | 2× Xeon 8570 | 36× Grace Arm |
| GPU Memory | 640GB HBM3 | 1.13TB HBM3e | 1.44TB HBM3e | 13.5TB HBM3e |
| FP8 Training | 32 PFLOPS | 32 PFLOPS | 72 PFLOPS | 720 PFLOPS |
| FP4 Inference | Not supported | Not supported | 144 PFLOPS | 1,440 PFLOPS |
| NVLink Bandwidth | 900 GB/s per GPU | 900 GB/s per GPU | 1.8 TB/s per GPU | 130 TB/s rack total |
| Memory Bandwidth | 24 TB/s total | 38.4 TB/s total | 64 TB/s total | 576 TB/s total |
| Power Consumption | 10.2 kW | 10.2 kW | 14.3 kW | 120 kW |
| Cooling | Air | Air | Air | Liquid |
| Form Factor | 8U server | 8U server | 8U server | 42U rack |
| Relative Training Speed | 1.0× (baseline) | 1.05-1.08× | 2.5-3.0× | 20-25× |
| Relative Inference Speed | 1.0× (baseline) | 1.15-1.25× | 12-15× | 25-30× |
| Optimal Model Size | 10-200B params | 50-500B params | 100B-1T params | 1T-10T params |
| Price Range (Estimated) | $350K-$450K | $400K-$500K | $600K-$750K | $3M-$4M |
DGX comparison guide: Training Performance Analysis Across Workload Types
Large Language Model Training (GPT-style, 175B parameters):
- DGX H100: Baseline performance, 100% relative throughput, approximately 14-16 days for full training run
- DGX H200: 5-8% improvement through larger batch sizes enabled by expanded memory, 13-15 days for equivalent training
- DGX B200: 2.5-3× improvement through enhanced FP8 compute and NVLink bandwidth, 5-6 days for equivalent training
- DGX GB200 NVL72: 20-25× improvement when training at rack scale with massive models (1T+ parameters), enables training runs previously impractical
Computer Vision Training (Object Detection, Instance Segmentation):
- DGX H100: Strong FP16/TF32 performance for vision workloads, baseline reference
- DGX H200: 8-12% improvement through higher-resolution imagery and larger batch processing
- DGX B200: 2-2.5× improvement through architectural enhancements benefiting mixed-precision vision workloads
- DGX GB200 NVL72: 15-20× improvement for video understanding and multi-modal training combining vision and language
Scientific Computing (Molecular Dynamics, CFD, Weather Modeling):
- DGX H100: Excellent FP64 performance for double-precision scientific applications
- DGX H200: Minimal improvement as scientific workloads less memory-constrained
- DGX B200: 40-60% improvement through enhanced FP64 Tensor Core capabilities
- DGX GB200 NVL72: 10-15× improvement for massive-scale simulations requiring tight coupling and low-latency communication
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DGX comparison guide: Total Cost of Ownership and Economic Considerations
While acquisition cost represents the most visible component of AI infrastructure investment decisions, comprehensive total cost of ownership (TCO) analysis must incorporate power consumption, cooling infrastructure requirements, data center space utilization, networking costs, software licensing, support contracts, and opportunity costs associated with extended training times consuming expensive researcher hours while waiting for model convergence.
Five-Year TCO Comparison Scenario: Training 100 Large Models Annually
Assumptions: Organization trains 100 large language models per year (mix of 20B, 70B, 175B parameter architectures), sustains 70% average GPU utilization, operates in data center with $0.12/kWh electricity cost, requires 24/7 enterprise support.
| Cost Category | DGX H100 (3 systems) | DGX H200 (3 systems) | DGX B200 (2 systems) | DGX GB200 NVL72 (1 rack) |
|---|---|---|---|---|
| Capital Expenditure | $1.2M | $1.35M | $1.4M | $3.5M |
| Power (5 years, 70% util) | $538K | $538K | $625K | $2.1M |
| Cooling Infrastructure | $150K | $150K | $180K | $400K |
| Rack Space (5yr lease) | $216K (3 racks) | $216K (3 racks) | $144K (2 racks) | $72K (1 rack) |
| Networking Equipment | $180K | $180K | $120K | $60K |
| Support Contracts (5yr) | $360K | $405K | $420K | $1.05M |
| Total 5-Year TCO | $2.64M | $2.84M | $2.89M | $7.18M |
| Training Capacity (job-years) | 300 models | 320 models | 750 models | 6,000 models |
| TCO per Training Job | $8,800 | $8,875 | $3,853 | $1,197 |
| Performance per Dollar | Baseline (1.0×) | 1.05× | 2.3× | 7.3× |
The analysis reveals counterintuitive economics: while the DGX GB200 NVL72 carries substantially higher capital expenditure ($3.5M versus $1.2-1.4M for traditional server-based alternatives), its dramatically superior computational density and power efficiency result in 70-85% lower cost per training job when amortized across high-utilization scenarios typical of production AI infrastructure. Organizations conducting hundreds or thousands of training runs annually find that GB200’s premium acquisition cost is recovered within 12-18 months through combination of faster training completion (reducing opportunity costs), lower per-job power consumption, reduced data center footprint costs, and simplified operational overhead managing single rack versus multiple-rack clusters requiring complex networking and job orchestration.
Conversely, organizations with more modest AI workload volumes (10-50 training jobs annually) or those exploring AI capabilities without commitment to sustained production-scale operations often find DGX H100 or H200 systems provide superior cost-effectiveness given lower capital requirements, reduced infrastructure complexity, and ability to deploy incrementally as workload demands mature rather than committing immediately to rack-scale infrastructure that may exceed near-term utilization requirements.
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DGX comparison guide FAQs
1. What is the main difference between DGX H100 and DGX H200?
The primary distinction is memory capacity and bandwidth: DGX H200 features 141GB HBM3e memory per GPU (versus 80GB HBM3 in H100) and 4.8 TB/s memory bandwidth (versus 3 TB/s in H100), delivering 76% more memory and 60% higher bandwidth. This enables training larger models with bigger batch sizes, serving inference workloads with extensive key-value caches, and processing high-resolution computer vision tasks. Compute performance (FP8/FP16 FLOPS) remains identical between platforms, making H200 most advantageous for memory-bound workloads while H100 offers better value for compute-bound applications.
2. How much faster is DGX B200 compared to DGX H100?
Real-world benchmarks demonstrate 2.5-3× faster training performance for large language models and 12-15× higher inference throughput when leveraging FP4 precision. The improvement stems from enhanced Tensor Core architecture (2.25× raw FP8 compute), doubled NVLink bandwidth reducing inter-GPU communication overhead, 125% more GPU memory enabling larger batch sizes, and second-generation Transformer Engine with FP4 support. Organizations report typical training time reductions from 14 days (H100) to 5-6 days (B200) for 175B parameter models.
3. When should I choose DGX GB200 NVL72 over multiple DGX B200 systems?
Select GB200 NVL72 when: (1) Training models exceeding 1 trillion parameters where unified NVLink fabric eliminates network bottlenecks, (2) Operating at massive scale (hundreds of training jobs monthly) where superior power efficiency and density economics justify premium acquisition cost, (3) Requiring real-time inference on trillion-parameter models where sub-100ms latency is critical, or (4) Facing data center space constraints where 10× performance density advantage enables capabilities impossible within available footprint. Choose multiple DGX B200 systems for: flexibility to deploy across multiple locations, incremental scaling aligned with workload growth, air-cooled infrastructure compatibility, and training workloads under 500B parameters where traditional multi-node approaches remain cost-effective.
4. Can I mix different DGX generations in a single training cluster?
Yes, NVIDIA DGX systems support heterogeneous cluster configurations through NCCL (NVIDIA Collective Communications Library) and compatible networking infrastructure (InfiniBand or RoCE). However, performance will be constrained by slowest component—placing H100 and B200 systems in same training job results in B200 GPUs idling while H100 completes slower operations. Optimal approach: dedicate each job to uniform hardware generation, use advanced systems (B200/GB200) for interactive development and fast iteration, relegate older hardware (H100/H200) to long-running batch jobs and inference serving where throughput advantages are less critical.
5. What cooling infrastructure is required for DGX GB200 NVL72?
GB200 NVL72 requires liquid cooling infrastructure with rear-door heat exchangers connected to facility chilled water loop. Specifications: 35-45°C supply water temperature, 15-25 GPM flow rate, 120 kW heat rejection capacity, facility water pressure 40-60 PSI. Requires coordination with data center facilities team for plumbing installation, leak detection systems, and redundant cooling capacity to maintain uptime during maintenance. Air-cooled alternatives (DGX H100/H200/B200) require no special cooling beyond standard data center hot-aisle/cold-aisle containment with 18-22°C cold aisle supply temperature.
6. How does Grace CPU compare to Intel Xeon in DGX systems?
Grace CPU (Arm Neoverse V2 architecture) in GB200 delivers 2-3× better energy efficiency and 50-70% higher memory bandwidth (LPDDR5X vs DDR5) compared to Intel Xeon processors in H100/H200/B200 systems. This benefits CPU-intensive preprocessing, data staging operations, and applications with substantial host-side computation. However, Grace runs Arm architecture requiring recompilation of x86-specific code—most Python-based ML frameworks (PyTorch, TensorFlow, JAX) include Arm-native binaries with zero modification, but custom C++/CUDA code may require minor adjustments. Organizations with extensive legacy x86 dependencies should validate compatibility during evaluation phase.
7. What software stack comes with NVIDIA DGX systems?
All DGX systems include NVIDIA Base Command software platform featuring: DGX OS (Ubuntu-based with optimized kernel), pre-configured containers for PyTorch, TensorFlow, JAX, RAPIDS, NeMo, Triton Inference Server, resource management via Kubernetes and Slurm, performance monitoring dashboards, and diagnostic utilities. Enterprise support includes quarterly software updates, CVE security patches, validated container releases, and access to NVIDIA AI Enterprise software suite. Organizations can optionally deploy third-party orchestration (Kubernetes, run:ai, Determined AI) while maintaining compatibility with NVIDIA stack.
8. Can DGX systems be deployed in cloud environments?
While DGX represents physical hardware traditionally deployed on-premises, major cloud providers (AWS, Google Cloud, Microsoft Azure, Oracle Cloud) offer DGX Cloud services providing access to equivalent or superior GPU infrastructure via consumption-based pricing. These offerings feature latest-generation hardware (H100, H200, B200), pre-configured software stacks, elastic scaling, and integration with cloud storage/networking services. Organizations uncertain about capital commitment or requiring temporary capacity for specific projects should evaluate cloud options; those with sustained, predictable workloads typically achieve 50-70% cost savings through on-premises ownership over 3-5 year periods.
9. How long does DGX system deployment typically take?
From purchase order to first successful training run: 4-8 weeks for H100/H200/B200 air-cooled systems (2-3 weeks for hardware delivery, 1-2 weeks for data center installation and network configuration, 1-3 weeks for software stack validation and user training), 12-16 weeks for GB200 NVL72 (longer lead time due to liquid cooling infrastructure installation requiring facility modifications, plumbing work, and coordination with building management). Organizations should begin planning 6-12 months ahead of desired operational date to accommodate procurement cycles, infrastructure preparation, and team readiness activities.
10. What is the upgrade path from older DGX systems?
NVIDIA does not offer in-place GPU upgrades for DGX systems due to tightly integrated architecture optimized for specific GPU generation. Organizations with DGX A100 or earlier systems should: (1) Continue operating existing infrastructure for stable production workloads where training time improvements don’t justify refresh costs, (2) Acquire new-generation systems (B200/GB200) for cutting-edge research and development while maintaining legacy hardware for validated workflows, (3) Trade-in or resell older equipment through NVIDIA partner channel or secondary markets—DGX A100 systems retain 40-50% of original value 3 years post-purchase given sustained demand from organizations entering AI infrastructure market. Plan hardware refresh cycles aligned with 3-4 year useful life optimizing depreciation tax benefits and performance-per-dollar economics.
