NVIDIA RTX PRO 4000 Blackwell vs AMD Radeon HD 7950
GPU · Specs Compare
Graphics Card
Release Date
Mar 2025
Jan 2012
Generation
Blackwell PRO W
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1230 MHz
—
Boost Clock
2055 MHz
—
Memory Clock
1750 MHz
1250 MHz
Memory
Memory Size
24GB
3GB
Memory Type
GDDR7
GDDR5
Memory Bus
192bit
384bit
Bandwidth
672.0GB/s
240.0GB/s
Render Config
SM Count
70
—
Shading Units
8960
1792
TMUs
280
112
ROPs
96
32
Tensor Cores
280
—
RT Cores
70
—
L1 Cache
128 KB (per SM)
16 KB (per CU)
L2 Cache
48 MB
768 KB
Compute Units
—
28
Theoretical Performance
Pixel Rate
197.3 GPixel/s
25.60 GPixel/s
Texture Rate
575.4 GTexel/s
89.60 GTexel/s
FP16 (half)
36.83 TFLOPS
—
FP32 (float)
36.83 TFLOPS
2.867 TFLOPS
FP64 (double)
575.4 GFLOPS
716.8 GFLOPS
Graphics Processor
GPU Name
GB203
Tahiti
Architecture
Blackwell 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
45.6 billion
4.313 billion
Die Size
378 mm²
352 mm²
GPU Variant
—
Tahiti PRO(215-0821056)
Board Design
TDP
140W
200W
Suggested PSU
300 W
550 W
Outputs
4x DisplayPort 2.1b
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
1x 16-pin
2x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
1.2
Vulkan
1.4
1.2
CUDA
12.0
—
Shader Model
6.8
5.1
Benchmark
3DMark Time Spy
—
1,969
3DMark Time Spy Extreme
—
1,019
▲ Specs Compare
Data sourced from official specifications and benchmark tests.