NVIDIA GeForce RTX 5080 vs NVIDIA H800 PCIe 80 GB
GPU · Specs Compare
Graphics Card
Release Date
Jan 2025
Mar 2023
Generation
GeForce 50
Tesla Hopper
Type
Desktop
AI GPU
Bus Interface
PCIe 5.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
2295 MHz
1095 MHz
Boost Clock
2617 MHz
1755 MHz
Memory Clock
1875 MHz
1593 MHz
Memory
Memory Size
16GB
80GB
Memory Type
GDDR7
HBM2e
Memory Bus
256bit
5120bit
Bandwidth
960.0GB/s
2039GB/s
Render Config
SM Count
84
114
Shading Units
10752
14592
TMUs
336
456
ROPs
112
24
Tensor Cores
336
456
RT Cores
84
—
L1 Cache
128 KB (per SM)
256 KB (per SM)
L2 Cache
64 MB
50 MB
Theoretical Performance
Pixel Rate
293.1 GPixel/s
42.12 GPixel/s
Texture Rate
879.3 GTexel/s
800.3 GTexel/s
FP16 (half)
56.28 TFLOPS
204.9 TFLOPS
FP32 (float)
56.28 TFLOPS
51.22 TFLOPS
FP64 (double)
879.3 GFLOPS
25.61 TFLOPS
Graphics Processor
GPU Name
GB203
GH100
GPU Variant
GB203-400-A1
—
Architecture
Blackwell 2.0
Hopper
Foundry
TSMC
TSMC
Process Size
5 nm
4 nm
Transistors
45.6 billion
80 billion
Die Size
378 mm²
814 mm²
Board Design
TDP
360W
350W
Suggested PSU
750 W
750 W
Outputs
1x HDMI 2.1b3x DisplayPort 2.1b
No outputs
Power Connectors
1x 16-pin
1x 16-pin
Graphics Features
DirectX
12 Ultimate (12_2)
N/A
OpenGL
4.6
N/A
OpenCL
3.0
3.0
Vulkan
1.4
N/A
CUDA
12.0
9.0
Shader Model
6.8
N/A
Benchmark
3DMark Time Spy
33,116
—
3DMark Time Spy Extreme
16,627
—
3DMark Speed Way
9,296
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.