AMD Radeon RX 6950 XT vs NVIDIA RTX PRO 4000 Blackwell
We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6950 XT and 24GB VRAM RTX PRO 4000 Blackwell to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA RTX PRO 4000 Blackwell 's Advantages
Released 2 years and 10 months late
Boost Clock has increased by 13% (2617MHz vs 2310MHz)
More VRAM (24GB vs 16GB)
Larger VRAM bandwidth (672.0GB/s vs 576.0GB/s)
3840 additional rendering cores
Lower TDP (140W vs 335W)
Score
Benchmark
FP32 (float)
Radeon RX 6950 XT
23.65 TFLOPS
RTX PRO 4000 Blackwell
+98%
46.9 TFLOPS
Graphics Card
May 2022
Release Date
Mar 2025
Navi II
Generation
Blackwell PRO W
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 5.0 x16
Clock Speeds
1860 MHz
Base Clock
1590 MHz
2310 MHz
Boost Clock
2617 MHz
2250 MHz
Memory Clock
1750 MHz
Memory
16GB
Memory Size
24GB
GDDR6
Memory Type
GDDR7
256bit
Memory Bus
192bit
576.0GB/s
Bandwidth
672.0GB/s
Render Config
80
Compute Units
-
-
SM Count
70
5120
Shading Units
8960
320
TMUs
280
128
ROPs
96
-
Tensor Cores
280
80
RT Cores
70
128 KB per Array
L1 Cache
128 KB (per SM)
4 MB
L2 Cache
48 MB
128 MB
L3 Cache
-
Theoretical Performance
295.7 GPixel/s
Pixel Rate
251.2 GPixel/s
739.2 GTexel/s
Texture Rate
732.8 GTexel/s
47.31 TFLOPS
FP16 (half)
46.90 TFLOPS
23.65 TFLOPS
FP32 (float)
46.90 TFLOPS
1478 GFLOPS
FP64 (double)
732.8 GFLOPS
Board Design
335W
TDP
140W
700 W
Suggested PSU
300 W
1x HDMI 2.1
2x DisplayPort 1.4a
Outputs
4x DisplayPort 2.1b
2x 8-pin
Power Connectors
1x 16-pin
Graphics Processor
Navi 21
GPU Name
GB203
Navi 21 KXTX
(215-121000289)
GPU Variant
-
RDNA 2.0
Architecture
Blackwell 2.0
TSMC
Foundry
TSMC
7 nm
Process Size
5 nm
26.8 billion
Transistors
45.6 billion
520 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
