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 demonstrates superior compute capabilities over the A100 SXM4 80GB. Its FP16 performance reaches 1979 TFLOPS compared to 312 TFLOPS, enabling up to 6.3 times faster mixed-precision training for deep learning models. FP32 performance improves to 67 TFLOPS from 19.5 TFLOPS, a 3.4-fold increase beneficial for scientific simulations requiring single-precision arithmetic.
Memory bandwidth of 3350 GB/s on the H100 versus 2039 GB/s on the A100 supports larger batch sizes in training and inference. This reduces overhead in memory-bound workloads like large language models, allowing 64 percent more data throughput. The H100's FP8 precision at 3958 TFLOPS further accelerates inference tasks with quantization.
Higher TDP of 700W on the H100 contrasts with 400W on the A100, reflecting greater power demands for peak performance. PCIe 5.0 and advanced NVLink on the H100 enhance multi-GPU scaling over the A100's PCIe 4.0.
Live Cloud Pricing
Real-time prices from 25+ providers. Updated every 60 seconds.
A100 SXM4 80GB
| 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 | ||
 Denvr | 4×NVIDIA A100 PCIe 80GB 80GB VRAM | 80GB | 64 vCPU 512GB RAM 7600GB Storage | Virginia | $1.15/GPU/hr $4.60/hr total (4×) | |||
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 80GB
The A100 SXM4 80GB suits cost-sensitive deployments. At $0.79 per hour starting price and $1.42 average versus the H100's $1.40 and $2.89, it offers better value with 23 live offers compared to 9. Lower 400W TDP reduces cooling and power costs in dense clusters.
Legacy workloads optimized for Ampere architecture favor the A100. It handles FP16 at 312 TFLOPS and 80 GB HBM2e VRAM adequately for fine-tuning or inference without needing Hopper-specific features.
When to Choose the H100 NVL
The H100 NVL excels in performance-critical AI tasks. FP16 at 1979 TFLOPS and FP8 at 3958 TFLOPS deliver substantial speedups for LLM training and inference over the A100's 312 TFLOPS FP16.
High-bandwidth 3350 GB/s memory and 94 GB HBM3 enable scaling to larger models. Users prioritizing throughput despite 700W TDP and higher $2.89 average hourly cost select the H100 for cutting-edge Hopper architecture.
Use Cases
H100's 1979 TFLOPS FP16 and 3958 TFLOPS FP8 provide over 6 times the throughput of A100's 312 TFLOPS FP16. This accelerates large-scale training significantly.
FP8 performance at 3958 TFLOPS on H100 optimizes quantized inference. Bandwidth of 3350 GB/s handles high concurrency better than A100's 2039 GB/s.
H100's 67 TFLOPS FP32 and superior memory enable faster iterations. It outperforms A100's 19.5 TFLOPS FP32 for parameter-efficient tuning.
A100's 312 TFLOPS FP16 suffices for image generation at lower cost of $1.42 average per hour. H100 offers speedup via 1979 TFLOPS FP16 for high-volume production.
A100's 19.5 TFLOPS FP32 meets simulation needs at 400W TDP and $0.79 starting price. H100's higher power suits only extreme scales.
Frequently Asked Questions
What is the performance difference between A100 and H100 in FP16?▾
The H100 NVL achieves 1979 TFLOPS in FP16, compared to 312 TFLOPS on the A100 SXM4 80GB. This represents a 6.3 times improvement for mixed-precision workloads. FP8 on H100 adds 3958 TFLOPS for further inference gains.
How does memory bandwidth compare?▾
H100 NVL offers 3350 GB/s with 94 GB HBM3, versus A100's 2039 GB/s and 80 GB HBM2e. The 64 percent higher bandwidth supports larger batch sizes in training. This impacts memory-bound AI tasks directly.
What are the current cloud prices?▾
A100 SXM4 80GB starts at $0.79 per hour, averaging $1.42 across 23 offers. H100 NVL begins at $1.40 per hour, averaging $2.89 across 9 offers. Availability favors A100 with more providers.
Which has higher power consumption?▾
H100 NVL requires 700W TDP, double the A100's 400W. This demands better cooling in deployments. Performance justifies the increase for H100 users.
Are they compatible with the same interconnects?▾
Both support NVLink and InfiniBand, but H100 uses PCIe 5.0 versus A100's PCIe 4.0. Form factors differ: SXM4 for A100, NVL for H100. Clusters may need upgrades for H100.
When is A100 still preferable?▾
A100 suits budgets with $0.79 per hour pricing and 400W efficiency. It delivers 312 TFLOPS FP16 adequately for non-peak tasks. More offers ensure easier procurement.
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.