AMD Radeon RX 6600 vs NVIDIA RTX PRO 4000 Blackwell
We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 and 24GB VRAM RTX PRO 4000 Blackwell to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon RX 6600 's Advantages
Lower TDP (132W vs 140W)
NVIDIA RTX PRO 4000 Blackwell 's Advantages
Released 3 years and 5 months late
Boost Clock has increased by 5% (2617MHz vs 2491MHz)
More VRAM (24GB vs 8GB)
Larger VRAM bandwidth (672.0GB/s vs 224.0GB/s)
7168 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6600
8.928 TFLOPS
RTX PRO 4000 Blackwell
+425%
46.9 TFLOPS
Graphics Card
Oct 2021
Release Date
Mar 2025
Navi II
Generation
Blackwell PRO W
Desktop
Type
Desktop
PCIe 4.0 x8
Bus Interface
PCIe 5.0 x16
Clock Speeds
1626 MHz
Base Clock
1590 MHz
2491 MHz
Boost Clock
2617 MHz
1750 MHz
Memory Clock
1750 MHz
Memory
8GB
Memory Size
24GB
GDDR6
Memory Type
GDDR7
128bit
Memory Bus
192bit
224.0GB/s
Bandwidth
672.0GB/s
Render Config
28
Compute Units
-
-
SM Count
70
1792
Shading Units
8960
112
TMUs
280
64
ROPs
96
-
Tensor Cores
280
28
RT Cores
70
128 KB per Array
L1 Cache
128 KB (per SM)
2 MB
L2 Cache
48 MB
32 MB
L3 Cache
-
Theoretical Performance
159.4 GPixel/s
Pixel Rate
251.2 GPixel/s
279.0 GTexel/s
Texture Rate
732.8 GTexel/s
17.86 TFLOPS
FP16 (half)
46.90 TFLOPS
8.928 TFLOPS
FP32 (float)
46.90 TFLOPS
558.0 GFLOPS
FP64 (double)
732.8 GFLOPS
Board Design
132W
TDP
140W
300 W
Suggested PSU
300 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
4x DisplayPort 2.1b
1x 8-pin
Power Connectors
1x 16-pin
Graphics Processor
Navi 23
GPU Name
GB203
Navi 23 XL
(215-130000016)
GPU Variant
-
RDNA 2.0
Architecture
Blackwell 2.0
TSMC
Foundry
TSMC
7 nm
Process Size
5 nm
11.06 billion
Transistors
45.6 billion
237 mm²
Die Size
378 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
2.1
OpenCL
3.0
1.3
Vulkan
1.4
-
CUDA
10.1
6.5
Shader Model
6.8
