NVIDIA H800 PCIe 80 GB vs NVIDIA A100 SXM4 40 GB
GPU Specs Compare
Graphics Card
Release Date
Mar 2023
May 2020
Generation
Tesla Hopper
Tesla Ampere
Type
AI GPU
AI GPU
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1095 MHz
1095 MHz
Boost Clock
1755 MHz
1410 MHz
Memory Clock
1593 MHz
1215 MHz
Memory
Memory Size
80GB
40GB
Memory Type
HBM2e
HBM2e
Memory Bus
5120bit
5120bit
Bandwidth
2039GB/s
1555GB/s
Render Config
SM Count
114
108
Shading Units
14592
6912
TMUs
456
432
ROPs
24
160
Tensor Cores
456
432
L1 Cache
256 KB (per SM)
192 KB (per SM)
L2 Cache
50 MB
40 MB
Theoretical Performance
Pixel Rate
42.12 GPixel/s
225.6 GPixel/s
Texture Rate
800.3 GTexel/s
609.1 GTexel/s
FP16 (half)
204.9 TFLOPS
77.97 TFLOPS
FP32 (float)
51.22 TFLOPS
19.49 TFLOPS
FP64 (double)
25.61 TFLOPS
9.746 TFLOPS
Graphics Processor
GPU Name
GH100
GA100
Architecture
Hopper
Ampere
Foundry
TSMC
TSMC
Process Size
4 nm
7 nm
Transistors
80 billion
54.2 billion
Die Size
814 mm²
826 mm²
Board Design
TDP
350W
400W
Suggested PSU
750 W
800 W
Outputs
No outputs
No outputs
Power Connectors
1x 16-pin
None
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
CUDA
9.0
8.0
Shader Model
N/A
N/A
📊 Benchmark
Blender
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2,186