AMD Radeon Pro V620 vs NVIDIA RTX PRO 4000 Blackwell SFF
GPU · Specs Compare
Graphics Card
Release Date
Nov 2021
Aug 2025
Generation
Radeon Pro
Blackwell PRO W
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x8
Clock Speeds
Base Clock
1825 MHz
577 MHz
Boost Clock
2200 MHz
1432 MHz
Memory Clock
2000 MHz
1125 MHz
Memory
Memory Size
32GB
24GB
Memory Type
GDDR6
GDDR7
Memory Bus
256bit
192bit
Bandwidth
512.0GB/s
432.0GB/s
Render Config
Compute Units
72
—
Shading Units
4608
8960
TMUs
288
280
ROPs
128
96
RT Cores
72
70
L1 Cache
128 KB per Array
128 KB (per SM)
L2 Cache
4 MB
48 MB
L3 Cache
128 MB
—
SM Count
—
70
Tensor Cores
—
280
Theoretical Performance
Pixel Rate
281.6 GPixel/s
137.5 GPixel/s
Texture Rate
633.6 GTexel/s
401.0 GTexel/s
FP16 (half)
40.55 TFLOPS
25.66 TFLOPS
FP32 (float)
20.28 TFLOPS
25.66 TFLOPS
FP64 (double)
1267 GFLOPS
401.0 GFLOPS
Graphics Processor
GPU Name
Navi 21
GB203
GPU Variant
Navi 21 XT(215-121000177)
—
Architecture
RDNA 2.0
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
7 nm
5 nm
Transistors
26.8 billion
45.6 billion
Die Size
520 mm²
378 mm²
Board Design
TDP
300W
70W
Suggested PSU
700 W
250 W
Outputs
No outputs
4x mini-DisplayPort 2.1b
Power Connectors
2x 8-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.3
1.4
Shader Model
6.5
6.8
CUDA
—
12.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.