NVIDIA H800 PCIe 80 GB vs AMD Radeon RX 6600S
GPU · Specs Compare
Graphics Card
Release Date
Mar 2023
Jan 2022
Generation
Tesla Hopper
Mobility Radeon
Type
AI GPU
Mobile
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
1095 MHz
1700 MHz
Boost Clock
1755 MHz
2000 MHz
Memory Clock
1593 MHz
1750 MHz
Memory
Memory Size
80GB
4GB
Memory Type
HBM2e
GDDR6
Memory Bus
5120bit
128bit
Bandwidth
2039GB/s
224.0GB/s
Render Config
SM Count
114
—
Shading Units
14592
1792
TMUs
456
112
ROPs
24
64
Tensor Cores
456
—
L1 Cache
256 KB (per SM)
128 KB per Array
L2 Cache
50 MB
2 MB
Compute Units
—
28
RT Cores
—
28
L3 Cache
—
32 MB
Theoretical Performance
Pixel Rate
42.12 GPixel/s
128.0 GPixel/s
Texture Rate
800.3 GTexel/s
224.0 GTexel/s
FP16 (half)
204.9 TFLOPS
14.34 TFLOPS
FP32 (float)
51.22 TFLOPS
7.168 TFLOPS
FP64 (double)
25.61 TFLOPS
448.0 GFLOPS
Graphics Processor
GPU Name
GH100
Navi 23
Architecture
Hopper
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
4 nm
7 nm
Transistors
80 billion
11.06 billion
Die Size
814 mm²
237 mm²
Board Design
TDP
350W
80W
Suggested PSU
750 W
—
Outputs
No outputs
No outputs
Power Connectors
1x 16-pin
None
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
2.1
Vulkan
N/A
1.3
CUDA
9.0
—
Shader Model
N/A
6.5
Benchmark
3DMark Time Spy
—
7,700
3DMark Time Spy Extreme
—
3,389
▲ Specs Compare
Data sourced from official specifications and benchmark tests.