2 GB
DDR3797 MHz
Boost Clock50 W
TDP28 nm
ProcessShare on Social Media
Share GeForce GT 640 OEM specifications with othersTechnical Specifications
Core Specifications
Architecture:
Kepler
Process Size:
28 nm
Base Clock:
797 MHz
Boost Clock:
797 MHz
Shader Units:
384
TMUs:
32
ROPs:
16
Memory & Performance
Memory Size:
2 GB
Memory Type:
DDR3
Memory Bandwidth:
28.5 GB/s
Bus Interface:
PCIe 3.0 x16
TDP:
50 W
Suggested PSU:
250 W
Cache & Die Information
L1 Cache:
16 KB
L2 Cache:
0.2 MB
Die Size:
118 mm²
Transistors:
1.3 billion
Transistor Density:
10.8 million/mm²
Physical Specifications
Board Length:
145 mm
Power Connectors:
None
Display Outputs:
1x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
Quick Facts
Performance
Pixel Fill Rate
6.4 GPixel/s
Texture Fill Rate
25.5 GTexel/s
FP32 Performance
0.6 TFLOPS
CUDA Toolkit Compatibility
Cuda Compute
3.0
sm_30
Architecture
Kepler
Supported CUDA Toolkits
5.0
5.5
6.0
6.5
7.0
7.5
8.0
Note: Support dropped in CUDA 9.0
Kepler architecture (GK104) - Support dropped in CUDA 9.0