NVIDIA RTX PRO 4000 Blackwell vs NVIDIA A800 PCIe 80 GB
GPU · Specs Compare
Graphics Card
Release Date
Mar 2025
Nov 2022
Generation
Blackwell PRO W
Ampere
Type
Desktop
AI GPU
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1230 MHz
1065 MHz
Boost Clock
2055 MHz
1410 MHz
Memory Clock
1750 MHz
1593 MHz
Memory
Memory Size
24GB
80GB
Memory Type
GDDR7
HBM2e
Memory Bus
192bit
5120bit
Bandwidth
672.0GB/s
2039GB/s
Render Config
SM Count
70
108
Shading Units
8960
6912
TMUs
280
432
ROPs
96
160
Tensor Cores
280
432
RT Cores
70
—
L1 Cache
128 KB (per SM)
192 KB (per SM)
L2 Cache
48 MB
80 MB
Theoretical Performance
Pixel Rate
197.3 GPixel/s
225.6 GPixel/s
Texture Rate
575.4 GTexel/s
609.1 GTexel/s
FP16 (half)
36.83 TFLOPS
77.97 TFLOPS
FP32 (float)
36.83 TFLOPS
19.49 TFLOPS
FP64 (double)
575.4 GFLOPS
9.746 TFLOPS
Graphics Processor
GPU Name
GB203
GA100
Architecture
Blackwell 2.0
Ampere
Foundry
TSMC
TSMC
Process Size
5 nm
7 nm
Transistors
45.6 billion
54.2 billion
Die Size
378 mm²
826 mm²
Board Design
TDP
140W
250W
Suggested PSU
300 W
600 W
Outputs
4x DisplayPort 2.1b
No outputs
Power Connectors
1x 16-pin
8-pin EPS
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
8.0
Shader Model
6.8
N/A
Benchmark
Blender
—
3,719
▲ Specs Compare
Data sourced from official specifications and benchmark tests.