Specifications Compared
| Spec | A100 | H100 |
|---|---|---|
| TDP | 400W | 700W |
| VRAM | 40-80 GB | 80-94 GB |
| CUDA Cores | 6,912 | 16,896 |
| Memory Type | HBM2e | HBM3 |
| Architecture | Ampere | Hopper |
| Form Factors | SXM4, PCIe | SXM5, PCIe, NVL |
| Interconnect | NVLink, PCIe 4.0, InfiniBand | NVLink, PCIe 5.0, InfiniBand |
| Tensor Cores | 432 | 528 |
| FP16 Performance | 312 TFLOPS | 1,979 TFLOPS |
| FP32 Performance | 19.5 TFLOPS | 67 TFLOPS |
| FP64 Performance | 9.7 TFLOPS | 34 TFLOPS |
| INT8 Performance | 624 TOPS | 3,958 TOPS |
| Memory Bandwidth | 2,039 GB/s | 3,350 GB/s |
Performance Analysis
The H100 NVL vastly outperforms the A100 SXM4 40GB in tensor core performance: its 1979 TFLOPS FP16 rating dwarfs the A100's 312 TFLOPS, accelerating large language model training where mixed-precision computations dominate. FP32 performance reaches 67 TFLOPS on the H100 NVL versus 19.5 TFLOPS on the A100, benefiting general-purpose simulations and inference pipelines requiring higher precision. The H100 NVL's FP8 capability of 3950 TFLOPS further optimizes inference for quantized models, enabling faster throughput in production deployments. Memory bandwidth of 3350 GB/s on the H100 NVL, compared to 2039 GB/s on the A100, supports larger batch sizes in training: models with billions of parameters process data more efficiently without stalling. This bandwidth advantage reduces latency for memory-bound tasks like diffusion models. Higher TDP of 700W on the H100 NVL demands robust cooling, but yields proportional gains in sustained workloads.
Live Cloud Pricing
Real-time prices from 25+ providers. Updated every 60 seconds.
A100 SXM4 40GB
| Provider | GPU Model | VRAM | Host Specs | Region | Price | Status | Action | |
|---|---|---|---|---|---|---|---|---|
 Vast.ai | NVIDIA A100 SXM4 80GB 80GB VRAM | 80GB | 256 vCPU 63GB RAM 397GB Storage | Slovenia | $0.73/GPU/hr | Available | ||
 LeaderGPU | 8×NVIDIA A100 PCIe 80GB 80GB VRAM | 80GB | 64 vCPU 384GB RAM 2000GB Storage | Netherlands | $0.90/GPU/hr $7.20/hr total (8×) | Available | ||
Vast.ai | 2×NVIDIA A100 SXM4 80GB 80GB VRAM | 80GB | 64 vCPU 126GB RAM 1114GB Storage | Czechia | $1.00/GPU/hr $2.00/hr total (2×) | Available | ||
Vast.ai | NVIDIA A100 SXM4 80GB 80GB VRAM | 80GB | 64 vCPU 63GB RAM 646GB Storage | Czechia | $1.07/GPU/hr | Available | ||
 Denvr | 8×NVIDIA A100 SXM4 80GB 80GB VRAM | 80GB | 128 vCPU 1024GB RAM 15200GB Storage | Virginia | $1.15/GPU/hr $9.20/hr total (8×) |
H100 NVL
| Provider | GPU Model | VRAM | Host Specs | Region | Price | Status | Action | |
|---|---|---|---|---|---|---|---|---|
 Hyperstack | 4×NVIDIA H100 PCIe 80GB VRAM | 80GB | 124 vCPU 720GB RAM 3300GB Storage | Canada | $1.90/GPU/hr $7.60/hr total (4×) | Available | ||
Hyperstack | 2×NVIDIA H100 PCIe 80GB VRAM | 80GB | 60 vCPU 360GB RAM 1600GB Storage | Canada | $1.90/GPU/hr $3.80/hr total (2×) | Available | ||
Hyperstack | 8×NVIDIA H100 PCIe 80GB VRAM | 80GB | 252 vCPU 1440GB RAM 6600GB Storage | Canada | $1.90/GPU/hr $15.20/hr total (8×) | Available | ||
Hyperstack | NVIDIA H100 PCIe 80GB VRAM | 80GB | 28 vCPU 180GB RAM 850GB Storage | Canada | $1.90/GPU/hr | Available | ||
Hyperstack | 8×NVIDIA H100 PCIe 80GB VRAM | 80GB | 252 vCPU 1440GB RAM 6600GB Storage | Canada | $1.95/GPU/hr $15.60/hr total (8×) | Available |
When to Choose the A100 SXM4 40GB
The A100 SXM4 40GB suits cost-sensitive deployments where cloud pricing from $1.00 per hour provides value. Its 400W TDP fits power-constrained environments better than the H100 NVL's 700W draw. Legacy workflows optimized for Ampere architecture run efficiently on the A100's 40 GB HBM2e VRAM and 2039 GB/s bandwidth without needing Hopper-specific features.
When to Choose the H100 NVL
The H100 NVL excels in modern AI training and inference demanding peak performance: 1979 TFLOPS FP16 and 94 GB HBM3 VRAM handle massive models infeasible on the A100. Scenarios with FP8 quantization leverage 3958 TFLOPS for ultra-low latency serving. Despite slightly higher pricing from $1.40 per hour, superior 3350 GB/s bandwidth justifies selection for high-throughput clusters.
Use Cases
H100 NVL's 1979 TFLOPS FP16 and 94 GB HBM3 VRAM accelerate training of large models far beyond A100's 312 TFLOPS and 40 GB. Higher 3350 GB/s bandwidth sustains large batch sizes.
FP8 performance of 3958 TFLOPS on H100 NVL optimizes quantized inference for high throughput. 94 GB VRAM fits full models without sharding, unlike A100's 40 GB limit.
A100 SXM4 40GB handles smaller fine-tuning tasks cost-effectively at $1.00 per hour start. H100 NVL shines for parameter-heavy models with 67 TFLOPS FP32.
H100 NVL's 3350 GB/s bandwidth and 1979 TFLOPS FP16 speed up image generation pipelines. Larger 94 GB VRAM supports high-resolution batches over A100's 40 GB.
A100's 19.5 TFLOPS FP32 and 400W TDP suffice for simulations with lower precision needs. Lower pricing from $1.00 per hour fits budget-conscious research.
Frequently Asked Questions
Which GPU has higher FP16 performance?▾
The H100 NVL achieves 1979 TFLOPS in FP16, compared to the A100 SXM4 40GB's 312 TFLOPS. This gap makes H100 ideal for tensor-heavy AI training. Bandwidth of 3350 GB/s further amplifies its advantage.
What is the VRAM difference between A100 SXM4 40GB and H100 NVL?▾
A100 SXM4 40GB offers 40 GB HBM2e, while H100 NVL provides 94 GB HBM3. Larger VRAM on H100 enables bigger models without multi-GPU setups. Memory bandwidth reaches 3350 GB/s on H100 versus 2039 GB/s.
How do cloud prices compare?▾
A100 SXM4 40GB starts at $1.00 per hour, averaging $2.80 across four offers. H100 NVL begins at $1.40 per hour, averaging $2.89 across nine offers. A100 provides better entry-level value.
What is the power consumption difference?▾
A100 SXM4 40GB has a 400W TDP, lower than H100 NVL's 700W. Lower power suits constrained data centers. H100's higher TDP correlates with 1979 TFLOPS FP16 performance.
Is H100 NVL faster for inference?▾
Yes, H100 NVL's FP8 at 3958 TFLOPS and 94 GB VRAM excel in inference over A100's capabilities. It supports quantized models with minimal latency. Bandwidth of 3350 GB/s handles large batches efficiently.
Which supports PCIe 5.0?▾
H100 NVL includes PCIe 5.0 interconnect alongside NVLink and InfiniBand, versus A100 SXM4 40GB's PCIe 4.0. Faster PCIe aids high-speed storage access. Both use SXM form factors for dense clusters.
Which is cheaper to rent, the A100 or the H100?▾
Cloud rental prices for both the A100 and H100 vary by provider, configuration, and availability. This page shows live pricing from 25+ providers updated every 60 seconds. Scroll to the Live Cloud Pricing section to compare current rates.
How much VRAM does the A100 have compared to the H100?▾
The A100 has 40 to 80 GB of HBM2e memory. The H100 has 80 to 94 GB of HBM3 memory.
Can I find A100 and H100 GPUs available to rent right now?▾
Yes. This page shows real-time availability across 25+ cloud GPU providers. The Live Cloud Pricing section displays only in-stock offers with current pricing.
What is the main difference between the A100 and the H100?▾
The A100 uses the Ampere architecture (2020) while the H100 uses Hopper (2022). The H100 delivers 6.3x the FP16 throughput and 1.6x the memory bandwidth of the A100.