NVIDIA RTX PRO 4000 Blackwell SFF vs AMD Radeon RX 6600 LE
GPU Specs Compare
Graphics Card
Release Date
Aug 2025
Dec 2023
Generation
Blackwell PRO W
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x8
PCIe 4.0 x8
Clock Speeds
Base Clock
577 MHz
1626 MHz
Boost Clock
1432 MHz
2495 MHz
Memory Clock
1125 MHz
1750 MHz
Memory
Memory Size
24GB
8GB
Memory Type
GDDR7
GDDR6
Memory Bus
192bit
128bit
Bandwidth
432.0GB/s
224.0GB/s
Render Config
SM Count
70
-
Shading Units
8960
1792
TMUs
280
112
ROPs
96
64
Tensor Cores
280
-
RT Cores
70
28
L1 Cache
128 KB (per SM)
128 KB per Array
L2 Cache
48 MB
2 MB
Compute Units
-
28
L3 Cache
-
32 MB
Theoretical Performance
Pixel Rate
137.5 GPixel/s
159.7 GPixel/s
Texture Rate
401.0 GTexel/s
279.4 GTexel/s
FP16 (half)
25.66 TFLOPS
17.88 TFLOPS
FP32 (float)
25.66 TFLOPS
8.942 TFLOPS
FP64 (double)
401.0 GFLOPS
558.9 GFLOPS
Graphics Processor
GPU Name
GB203
Navi 23
Architecture
Blackwell 2.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
7 nm
Transistors
45.6 billion
11.06 billion
Die Size
378 mm²
237 mm²
GPU Variant
-
Navi 23 XL(215-130000016)
Board Design
TDP
70W
132W
Suggested PSU
250 W
300 W
Outputs
4x mini-DisplayPort 2.1b
1x HDMI 2.13x 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
2.1
Vulkan
1.4
1.3
CUDA
12.0
-
Shader Model
6.8
6.7