1.5 GB
DDR3720 MHz
Boost Clock75 W
TDP40 nm
ProcessShare on Social Media
Share GeForce GT 640 OEM Rebrand specifications with othersTechnical Specifications
Core Specifications
Architecture:
Fermi 2.0
Process Size:
40 nm
Base Clock:
720 MHz
Boost Clock:
720 MHz
Shader Units:
144
SMs:
3
TMUs:
24
ROPs:
24
Memory & Performance
Memory Size:
1.5 GB
Memory Type:
DDR3
Memory Bandwidth:
38.4 GB/s
Bus Interface:
PCIe 2.0 x16
TDP:
75 W
Suggested PSU:
250 W
Cache & Die Information
L1 Cache:
64 KB
L2 Cache:
0.4 MB
Die Size:
238 mm²
Transistors:
1.2 billion
Transistor Density:
4.9 million/mm²
Physical Specifications
Board Length:
145 mm
Power Connectors:
None
Display Outputs:
2x DVI, 1x mini-HDMI 1.3a
Quick Facts
Performance
Pixel Fill Rate
4.3 GPixel/s
Texture Fill Rate
17.3 GTexel/s
FP32 Performance
0.4 TFLOPS
CUDA Toolkit Compatibility
Cuda Compute
2.1
sm_21
Architecture
Fermi
Supported CUDA Toolkits
3.2
4.0
4.1
4.2
5.0
5.5
6.0
6.5
7.0
7.5
Note: Support dropped in CUDA 8.0
Fermi architecture (GF104/GF106/GF108/GF114/GF116/GF119) - Support dropped in CUDA 8.0