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 outperforms the A100 significantly in compute capabilities, with 1979 TFLOPS FP16 compared to 312 TFLOPS and 67 TFLOPS FP32 against 19.5 TFLOPS. This delta accelerates deep learning training, where FP16 handles most matrix operations, reducing epochs from days to hours on large datasets. FP32 improvements benefit scientific simulations requiring precise single-precision math.
H100's 3350 GB/s memory bandwidth exceeds A100's 2039 GB/s, enabling larger batch sizes in training without memory bottlenecks; for instance, models with billions of parameters fit more comfortably on H100's 94 GB HBM3. Inference sees further gains from H100's 3958 TFLOPS FP8, ideal for serving quantized models at scale. Higher TDP of 700W on H100 versus 400W demands robust cooling but yields proportional throughput increases.
Live Cloud Pricing
Real-time prices from 25+ providers. Updated every 60 seconds.
A100
| Provider | GPU Model | VRAM | Host Specs | Region | Price | Status | Action | |
|---|---|---|---|---|---|---|---|---|
 Vast.ai | NVIDIA A100 SXM4 80GB 80GB VRAM | 80GB | 256 vCPU 63GB RAM 2826GB Storage | Slovenia | $0.73/GPU/hr | Available | ||
Vast.ai | 2×NVIDIA A100 SXM4 80GB 80GB VRAM | 80GB | 256 vCPU 126GB RAM 794GB Storage | Slovenia | $0.73/GPU/hr $1.47/hr total (2×) | 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 | 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
| 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
The A100 suits budget-conscious projects or legacy workflows optimized for Ampere. Its lower pricing, from $0.13/hr average $1.33/hr across 34 offers, makes it viable for fine-tuning smaller models or inference on datasets fitting within 80 GB HBM2e. Deployments with PCIe 4.0 infrastructure favor A100 to avoid upgrade costs.
When to Choose the H100
The H100 excels in demanding AI tasks requiring peak efficiency. Its 1979 TFLOPS FP16 and 3350 GB/s bandwidth handle massive LLM training or high-throughput inference, justifying $0.80/hr starting price. Users with NVLink or PCIe 5.0 setups leverage H100 for scaling beyond A100 limits.
Use Cases
H100's 1979 TFLOPS FP16 and 67 TFLOPS FP32 vastly outpace A100's 312 TFLOPS and 19.5 TFLOPS, speeding up training of billion-parameter models. Higher 3350 GB/s bandwidth supports larger batches.
H100's 3958 TFLOPS FP8 enables ultra-fast quantized inference, far beyond A100 capabilities. 94 GB HBM3 handles concurrent requests efficiently.
A100 suffices for fine-tuning on 40-80 GB datasets at lower $1.33/hr average cost. H100 accelerates with superior FP16 if scale demands it.
H100's memory bandwidth of 3350 GB/s and FP16 performance generate images faster than A100's 2039 GB/s setup. Larger VRAM aids high-resolution tasks.
H100's 67 TFLOPS FP32 outperforms A100's 19.5 TFLOPS for simulations. Enhanced interconnects like PCIe 5.0 improve multi-node scalability.
Frequently Asked Questions
Which GPU has more VRAM?▾
H100 offers 80-94 GB HBM3, exceeding A100's 40-80 GB HBM2e. This allows H100 to manage larger models without splitting across GPUs. Bandwidth also favors H100 at 3350 GB/s over 2039 GB/s.
How do prices compare?▾
A100 starts at $0.13/hr with average $1.33/hr across 34 offers; H100 from $0.80/hr average $2.62/hr across 22 offers. A100 provides better value for lighter workloads.
Is H100 faster for training?▾
Yes, H100's 1979 TFLOPS FP16 is over 6x A100's 312 TFLOPS. FP32 at 67 TFLOPS beats 19.5 TFLOPS, cutting training times significantly.
What is the power difference?▾
H100 has 700W TDP versus A100's 400W. H100 requires advanced cooling but delivers higher performance density.
Which supports newer interconnects?▾
H100 includes PCIe 5.0 and SXM5/NVL form factors alongside NVLink. A100 relies on PCIe 4.0 and SXM4.
Does H100 have FP8?▾
H100 provides 3958 TFLOPS FP8 for inference acceleration; A100 lacks this precision. It boosts low-precision serving workloads.
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.