NVIDIA RTX PRO 4000 Blackwell SFF vs NVIDIA GeForce GTX 950M Mac Edition
GPU · Specs Compare
Graphics Card
Release Date
Aug 2025
Mar 2015
Generation
Blackwell PRO W
GeForce 900M
Type
Desktop
Mobile
Bus Interface
PCIe 5.0 x8
MXM-B (3.0)
Clock Speeds
Base Clock
577 MHz
993 MHz
Boost Clock
1432 MHz
1124 MHz
Memory Clock
1125 MHz
900 MHz
Memory
Memory Size
24GB
2GB
Memory Type
GDDR7
DDR3
Memory Bus
192bit
128bit
Bandwidth
432.0GB/s
28.80GB/s
Render Config
SM Count
70
—
Shading Units
8960
640
TMUs
280
40
ROPs
96
16
Tensor Cores
280
—
RT Cores
70
—
L1 Cache
128 KB (per SM)
64 KB (per SMM)
L2 Cache
48 MB
2 MB
Theoretical Performance
Pixel Rate
137.5 GPixel/s
17.98 GPixel/s
Texture Rate
401.0 GTexel/s
44.96 GTexel/s
FP16 (half)
25.66 TFLOPS
—
FP32 (float)
25.66 TFLOPS
1439 GFLOPS
FP64 (double)
401.0 GFLOPS
44.96 GFLOPS
Graphics Processor
GPU Name
GB203
GM107
Architecture
Blackwell 2.0
Maxwell
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
45.6 billion
1.87 billion
Die Size
378 mm²
148 mm²
GPU Variant
—
N16P-GT
Board Design
TDP
70W
75W
Suggested PSU
250 W
—
Outputs
4x mini-DisplayPort 2.1b
No outputs
Power Connectors
None
—
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.4
1.3
CUDA
12.0
5.0
Shader Model
6.8
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.