Specifications Compared
| Spec | H100 | RTX-A4000 |
|---|---|---|
| TDP | 700W | 140W |
| VRAM | 80-94 GB | 16 GB |
| CUDA Cores | 16,896 | 6,144 |
| Memory Type | HBM3 | GDDR6 |
| Architecture | Hopper | Ampere |
| Form Factors | SXM5, PCIe, NVL | PCIe |
| Interconnect | NVLink, PCIe 5.0, InfiniBand | |
| Tensor Cores | 528 | 192 |
| FP8 Performance | 3,958 TFLOPS | |
| FP16 Performance | 1,979 TFLOPS | 19.2 TFLOPS |
| FP32 Performance | 67 TFLOPS | 19.2 TFLOPS |
| FP64 Performance | 34 TFLOPS | |
| INT8 Performance | 3,958 TOPS | |
| Memory Bandwidth | 3,350 GB/s | 448 GB/s |
Performance Analysis
Raw specifications reveal profound differences in compute capability between the H100 PCIe and RTX A4500. The H100 PCIe surges to 1979 TFLOPS in FP16, ideal for mixed-precision training in deep learning where lower precision accelerates matrix operations without significant accuracy loss; its 67 TFLOPS FP32 supports general-purpose computing. The RTX A4500 trails at 46 TFLOPS FP16 and 23 TFLOPS FP32, suiting smaller models but struggling with large-scale neural networks. Memory configurations amplify this: 80 to 94 GB HBM3 on the H100 PCIe enables massive batch sizes for training billion-parameter LLMs, while 20 GB GDDR6 on the RTX A4500 limits it to smaller datasets. Bandwidth tells a similar story: 3350 GB/s on the H100 PCIe sustains high throughput for data-intensive inference, preventing bottlenecks in token generation; the RTX A4500's 560 GB/s suffices for batch sizes under 32 but falters beyond. Power draw further differentiates them, with the H100 PCIe at 700W for peak output versus the RTX A4500's 200W efficiency.
Live Cloud Pricing
Real-time prices from 25+ providers. Updated every 60 seconds.
H100 PCIe
| 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 | ||
![]() Voltage Park | 8×NVIDIA H100 SXM5 80GB VRAM | 80GB | 208 vCPU 928GB RAM 19200GB Storage | Dallas, Texas | $1.99/GPU/hr $15.92/hr total (8×) |
RTX A4500
| Provider | GPU Model | VRAM | Host Specs | Region | Price | Status | Action | |
|---|---|---|---|---|---|---|---|---|
![]() TensorDock | NVIDIA RTX A4000 16GB VRAM | 16GB | 0 vCPU 0GB RAM | Tallinn, Harjumaa | $0.08/GPU/hr | Available | ||
![]() Vast.ai | 8×NVIDIA RTX A4000 16GB VRAM | 16GB | 80 vCPU 201GB RAM 1698GB Storage | United Kingdom | $0.15/GPU/hr $1.17/hr total (8×) | Available | ||
![]() Hyperstack | 4×NVIDIA RTX A4000 16GB VRAM | 16GB | 16 vCPU 86GB RAM 500GB Storage | Norway | $0.15/GPU/hr $0.60/hr total (4×) | Available | ||
![]() Hyperstack | 2×NVIDIA RTX A4000 16GB VRAM | 16GB | 8 vCPU 43GB RAM 200GB Storage | Norway | $0.15/GPU/hr $0.30/hr total (2×) | Available | ||
![]() Hyperstack | NVIDIA RTX A4000 16GB VRAM | 16GB | 4 vCPU 21GB RAM 100GB Storage | Norway | $0.15/GPU/hr | Available |
When to Choose the H100 PCIe
Select the H100 PCIe for demanding AI workloads requiring vast memory and compute. Large language model training benefits from 80 to 94 GB HBM3 VRAM to hold entire models and 1979 TFLOPS FP16 for rapid iterations. High-throughput inference on models exceeding 20 GB also favors its 3350 GB/s bandwidth. HPC simulations leverage 67 TFLOPS FP32 and NVLink interconnects for multi-GPU scaling.
When to Choose the RTX A4500
Opt for the RTX A4500 in cost-sensitive or power-constrained scenarios. Professional visualization and CAD handle 20 GB GDDR6 VRAM adequately at 560 GB/s bandwidth. Light fine-tuning or inference on models under 16 GB parameters runs efficiently on 46 TFLOPS FP16. Its 200W TDP and $0.10 per hour starting price suit edge deployments or prototyping.
Use Cases
The H100 PCIe accommodates massive models with 80 to 94 GB HBM3 VRAM and delivers 1979 TFLOPS FP16 for accelerated training. The RTX A4500's 20 GB GDDR6 cannot fit large LLMs.
High batch sizes and throughput demand the H100 PCE's 3350 GB/s bandwidth and 1979 TFLOPS FP16. RTX A4500 suits only small models under 20 GB.
Fine-tuning mid-to-large models requires 67 TFLOPS FP32 and ample VRAM on H100 PCIe. RTX A4500 works for tiny models but limits scale.
Stable Diffusion fits in 20 GB GDDR6 on RTX A4500 for quick generations at 46 TFLOPS FP16. H100 PCIe excels for high-resolution batches.
Complex simulations need 3350 GB/s bandwidth and 67 TFLOPS FP32 on H100 PCIe. RTX A4500 handles basic tasks at lower scale.
Frequently Asked Questions
Which GPU has more VRAM: H100 PCIe or RTX A4500?▾
The H100 PCIe provides 80 to 94 GB HBM3 VRAM, far exceeding the RTX A4500's 20 GB GDDR6. This enables larger models on the H100 PCIe. Bandwidth follows suit at 3350 GB/s versus 560 GB/s.
What are the FP16 performance figures for H100 PCIe and RTX A4500?▾
H100 PCIe reaches 1979 TFLOPS in FP16, while RTX A4500 achieves 46 TFLOPS. This gap favors H100 PCIe for AI acceleration. FP32 stands at 67 TFLOPS versus 23 TFLOPS.
How do cloud prices compare for H100 PCIe and RTX A4500?▾
H100 PCIe starts at $1.25 per hour, averaging $2.65 over 20 offers. RTX A4500 begins at $0.10 per hour, averaging $0.19 across 4 offers. Price reflects performance disparity.
What is the TDP of each GPU?▾
The H100 PCIe consumes 700W TDP, supporting peak performance. RTX A4500 uses 200W, aiding efficiency in low-power setups. Form factors include PCIe for both.
Is the H100 PCIe better for AI training than RTX A4500?▾
Yes, due to 1979 TFLOPS FP16 and 80 to 94 GB VRAM on H100 PCIe. RTX A4500's 46 TFLOPS and 20 GB limit it to smaller training jobs.
What architectures power these GPUs?▾
H100 PCIe uses Hopper from 2022 with NVLink and PCIe 5.0. RTX A4500 employs Ampere from 2021 with PCIe support. This generational leap boosts H100 PCIe capabilities.
Which is cheaper to rent, the H100 or the RTX A4000?▾
Cloud rental prices for both the H100 and RTX A4000 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 H100 have compared to the RTX A4000?▾
The H100 has 80 to 94 GB of HBM3 memory. The RTX A4000 has 16 GB of GDDR6 memory.
Can I find H100 and RTX A4000 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 H100 and the RTX A4000?▾
The H100 uses the Hopper architecture (2022) while the RTX A4000 uses Ampere (2021). The H100 delivers 103.1x the FP16 throughput and 7.5x the memory bandwidth of the RTX A4000.



