NVIDIA RTX A400 vs NVIDIA RTX PRO 4000 Blackwell SFF
GPU · Specs Compare
Graphics Card
Release Date
Apr 2024
Aug 2025
Generation
Quadro Ampere(Ax000)
Blackwell PRO W
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 5.0 x8
Clock Speeds
Base Clock
1417 MHz
577 MHz
Boost Clock
1762 MHz
1432 MHz
Memory Clock
1500 MHz
1125 MHz
Memory
Memory Size
4GB
24GB
Memory Type
GDDR6
GDDR7
Memory Bus
64bit
192bit
Bandwidth
96.00GB/s
432.0GB/s
Render Config
SM Count
6
70
Shading Units
768
8960
TMUs
24
280
ROPs
16
96
Tensor Cores
24
280
RT Cores
6
70
L1 Cache
128 KB (per SM)
128 KB (per SM)
L2 Cache
2 MB
48 MB
Theoretical Performance
Pixel Rate
28.19 GPixel/s
137.5 GPixel/s
Texture Rate
42.29 GTexel/s
401.0 GTexel/s
FP16 (half)
2.706 TFLOPS
25.66 TFLOPS
FP32 (float)
2.706 TFLOPS
25.66 TFLOPS
FP64 (double)
42.29 GFLOPS
401.0 GFLOPS
Graphics Processor
GPU Name
GA107
GB203
Architecture
Ampere
Blackwell 2.0
Foundry
Samsung
TSMC
Process Size
8 nm
5 nm
Transistors
8.7 billion
45.6 billion
Die Size
200 mm²
378 mm²
Board Design
TDP
50W
70W
Suggested PSU
250 W
250 W
Outputs
4x mini-DisplayPort 1.4a
4x mini-DisplayPort 2.1b
Power Connectors
None
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.3
1.4
CUDA
8.6
12.0
Shader Model
6.8
6.8
▲ Specs Compare
Data sourced from official specifications and benchmark tests.