NVIDIA H800 PCIe 80 GB vs NVIDIA RTX PRO 4500 Blackwell Workstation
GPU Specs Compare
Graphics Card
Release Date
Mar 2023
Mar 2025
Generation
Tesla Hopper
Blackwell PRO W
Type
AI GPU
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
1095 MHz
1635 MHz
Boost Clock
1755 MHz
2407 MHz
Memory Clock
1593 MHz
1750 MHz
Memory
Memory Size
80GB
32GB
Memory Type
HBM2e
GDDR7
Memory Bus
5120bit
256bit
Bandwidth
2039GB/s
896.0GB/s
Render Config
SM Count
114
82
Shading Units
14592
10496
TMUs
456
328
ROPs
24
112
Tensor Cores
456
328
L1 Cache
256 KB (per SM)
128 KB (per SM)
L2 Cache
50 MB
64 MB
RT Cores
-
82
Theoretical Performance
Pixel Rate
42.12 GPixel/s
269.6 GPixel/s
Texture Rate
800.3 GTexel/s
789.5 GTexel/s
FP16 (half)
204.9 TFLOPS
50.53 TFLOPS
FP32 (float)
51.22 TFLOPS
50.53 TFLOPS
FP64 (double)
25.61 TFLOPS
789.5 GFLOPS
Graphics Processor
GPU Name
GH100
GB203
Architecture
Hopper
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
4 nm
5 nm
Transistors
80 billion
45.6 billion
Die Size
814 mm²
378 mm²
Board Design
TDP
350W
200W
Suggested PSU
750 W
550 W
Outputs
No outputs
4x DisplayPort 2.1b
Power Connectors
1x 16-pin
1x 16-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
3.0
Vulkan
N/A
1.4
CUDA
9.0
12.0
Shader Model
N/A
6.9