NVIDIA RTX PRO 4000 Blackwell SFF vs NVIDIA RTX A5500
GPU · Specs Compare
Graphics Card
Release Date
Aug 2025
Mar 2022
Generation
Blackwell PRO W
Quadro Ampere
Type
Desktop
Professional
Bus Interface
PCIe 5.0 x8
PCIe 4.0 x16
Clock Speeds
Base Clock
577 MHz
1080 MHz
Boost Clock
1432 MHz
1665 MHz
Memory Clock
1125 MHz
2000 MHz
Memory
Memory Size
24GB
24GB
Memory Type
GDDR7
GDDR6
Memory Bus
192bit
384bit
Bandwidth
432.0GB/s
768.0GB/s
Render Config
SM Count
70
80
Shading Units
8960
10240
TMUs
280
320
ROPs
96
96
Tensor Cores
280
320
RT Cores
70
80
L1 Cache
128 KB (per SM)
128 KB (per SM)
L2 Cache
48 MB
6 MB
Theoretical Performance
Pixel Rate
137.5 GPixel/s
159.8 GPixel/s
Texture Rate
401.0 GTexel/s
532.8 GTexel/s
FP16 (half)
25.66 TFLOPS
34.10 TFLOPS
FP32 (float)
25.66 TFLOPS
34.10 TFLOPS
FP64 (double)
401.0 GFLOPS
532.8 GFLOPS
Graphics Processor
GPU Name
GB203
GA102
Architecture
Blackwell 2.0
Ampere
Foundry
TSMC
Samsung
Process Size
5 nm
8 nm
Transistors
45.6 billion
28.3 billion
Die Size
378 mm²
628 mm²
Board Design
TDP
70W
230W
Suggested PSU
250 W
550 W
Outputs
4x mini-DisplayPort 2.1b
4x DisplayPort 1.4a
Power Connectors
None
1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.4
1.3
CUDA
12.0
8.6
Shader Model
6.8
6.7
Benchmark
OctaneBench
—
596
Blender
—
4,316
▲ Specs Compare
Data sourced from official specifications and benchmark tests.