NVIDIA H100 SXM5 64 GB vs NVIDIA A800 SXM4 80 GB
GPU · Specs Compare
Graphics Card
Release Date
Mar 2023
Aug 2022
Generation
Tesla Hopper
Ampere
Type
AI GPU
AI GPU
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1665 MHz
1155 MHz
Boost Clock
1980 MHz
1410 MHz
Memory Clock
1313 MHz
1593 MHz
Memory
Memory Size
64GB
80GB
Memory Type
HBM3
HBM2e
Memory Bus
3072bit
5120bit
Bandwidth
2.02TB/s
2039GB/s
Render Config
SM Count
132
108
Shading Units
16896
6912
TMUs
528
432
ROPs
24
160
Tensor Cores
528
432
L1 Cache
256 KB (per SM)
192 KB (per SM)
L2 Cache
30 MB
40 MB
Theoretical Performance
Pixel Rate
47.52 GPixel/s
225.6 GPixel/s
Texture Rate
1045 GTexel/s
609.1 GTexel/s
FP16 (half)
267.6 TFLOPS
77.97 TFLOPS
FP32 (float)
66.91 TFLOPS
19.49 TFLOPS
FP64 (double)
33.45 TFLOPS
9.746 TFLOPS
Graphics Processor
GPU Name
GH100
GA100
Architecture
Hopper
Ampere
Foundry
TSMC
TSMC
Process Size
5 nm
7 nm
Transistors
80 billion
54.2 billion
Die Size
814 mm²
826 mm²
Board Design
TDP
700W
400W
Suggested PSU
1100 W
800 W
Outputs
No outputs
No outputs
Power Connectors
8-pin EPS
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
▲ Specs Compare
Data sourced from official specifications and benchmark tests.