NVIDIA RTX PRO 4000 Blackwell vs AMD Radeon 660M
GPU · Specs Compare
Graphics Card
Release Date
Mar 2025
Jan 2022
Generation
Blackwell PRO W
Rembrandt
Type
Desktop
Integrated
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
1230 MHz
1500 MHz
Boost Clock
2055 MHz
1900 MHz
Memory Clock
1750 MHz
System Shared
Memory
Memory Size
24GB
System Shared
Memory Type
GDDR7
System Shared
Memory Bus
192bit
System Shared
Bandwidth
672.0GB/s
System Dependent
Render Config
SM Count
70
—
Shading Units
8960
384
TMUs
280
24
ROPs
96
16
Tensor Cores
280
—
RT Cores
70
6
L1 Cache
128 KB (per SM)
128 KB per Array
L2 Cache
48 MB
2 MB
Compute Units
—
6
Theoretical Performance
Pixel Rate
197.3 GPixel/s
30.40 GPixel/s
Texture Rate
575.4 GTexel/s
45.60 GTexel/s
FP16 (half)
36.83 TFLOPS
2.918 TFLOPS
FP32 (float)
36.83 TFLOPS
1459 GFLOPS
FP64 (double)
575.4 GFLOPS
91.20 GFLOPS
Graphics Processor
GPU Name
GB203
Rembrandt
Architecture
Blackwell 2.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
6 nm
Transistors
45.6 billion
13.1 billion
Die Size
378 mm²
210 mm²
Board Design
TDP
140W
15W
Suggested PSU
300 W
—
Outputs
4x DisplayPort 2.1b
No outputs
Power Connectors
1x 16-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
2.0
Vulkan
1.4
1.2
CUDA
12.0
—
Shader Model
6.8
6.5
Benchmark
3DMark Time Spy
—
1,537
3DMark Time Spy Extreme
—
701
▲ Specs Compare
Data sourced from official specifications and benchmark tests.