NVIDIA RTX PRO 4000 Blackwell SFF vs AMD Radeon HD 7970
GPU · Specs Compare
Graphics Card
Release Date
Aug 2025
Jan 2012
Generation
Blackwell PRO W
Southern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
577 MHz
—
Boost Clock
1432 MHz
—
Memory Clock
1125 MHz
1375 MHz
Memory
Memory Size
24GB
3GB
Memory Type
GDDR7
GDDR5
Memory Bus
192bit
384bit
Bandwidth
432.0GB/s
264.0GB/s
Render Config
SM Count
70
—
Shading Units
8960
2048
TMUs
280
128
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
—
32
Theoretical Performance
Pixel Rate
137.5 GPixel/s
29.60 GPixel/s
Texture Rate
401.0 GTexel/s
118.4 GTexel/s
FP16 (half)
25.66 TFLOPS
—
FP32 (float)
25.66 TFLOPS
3.789 TFLOPS
FP64 (double)
401.0 GFLOPS
947.2 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 XT(215-0821060)
Board Design
TDP
70W
250W
Suggested PSU
250 W
600 W
Outputs
4x mini-DisplayPort 2.1b
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
2.1 (1.2)
Vulkan
1.4
1.2.170
CUDA
12.0
—
Shader Model
6.8
6.5 (5.1)
Benchmark
3DMark Time Spy
—
2,310
3DMark Time Spy Extreme
—
1,209
▲ Specs Compare
Data sourced from official specifications and benchmark tests.