NVIDIA Rubin Ultra GPU vs NVIDIA H800 PCIe 80 GB
GPU Specs Compare
Graphics Card
Release Date
Jan 2027
Mar 2023
Generation
Server Rubin
Tesla Hopper
Type
Desktop
AI GPU
Bus Interface
PCIe 6.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
700 MHz
1095 MHz
Boost Clock
2267 MHz
1755 MHz
Memory Clock
1900 MHz
1593 MHz
Memory
Memory Size
1024GB
80GB
Memory Type
HBM4e
HBM2e
Memory Bus
32768bit
5120bit
Bandwidth
31.1TB/s
2039GB/s
Render Config
SM Count
448
114
Shading Units
57344
14592
TMUs
1792
456
ROPs
24
24
Tensor Cores
1792
456
L1 Cache
256 KB (per SM)
256 KB (per SM)
L2 Cache
128 MB
50 MB
Theoretical Performance
Pixel Rate
54.41 GPixel/s
42.12 GPixel/s
Texture Rate
4062.5 GTexel/s
800.3 GTexel/s
FP16 (half)
520.0 TFLOPS
204.9 TFLOPS
FP32 (float)
260.0 TFLOPS
51.22 TFLOPS
FP64 (double)
65.00 TFLOPS
25.61 TFLOPS
Graphics Processor
GPU Name
GR110
GH100
Architecture
Rubin Ultra
Hopper
Foundry
TSMC
TSMC
Process Size
3 nm
4 nm
Transistors
670 billion
80 billion
Die Size
2912 mm²
814 mm²
Board Design
TDP
3600W
350W
Suggested PSU
4000 W
750 W
Outputs
No outputs
No outputs
Power Connectors
-
1x 16-pin
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
CUDA
10.7
9.0
Shader Model
N/A
N/A