GeForce GT 640M
| Manufacturer: | NVIDIA |
| Series: | GeForce 600M |
| Codename: | GK107 N13P-GS |
| Release date: | 2012. March 22. |
| Die count: | 1 |
| Die size: | 118 mm2 |
| Fab: | 28 nm |
| Transistors: | 1270 millions |
| Bus interface: | PCI-E 3.0 x16 |
Clock rates
| Core clock: | 625 MHz |
| Memory clock: | 900 MHz |
| Effective memory clock (DDR): | 7200 MHz |
Memory
| Memory size: | 2048, 1024 MB |
| Memory bus type: | DDR3 |
| Memory bus width: | 128 bit |
| Memory bandwidth (maximum): | 28.8 GB/s |
Core units
| Unified shader units: | 384 |
| Texture mapping units (TMU): | 32 |
| Render output units (ROP): | 16 |
| SM count: | 2 |
Supported Technologies:
| DirectX: | 11.2 |
| OpenGL: | 4.5 |
| OpenCL: | 1.1 |
Performance
| Pixel fillrate: | 5 (GP/s) |
| Texture fillrate: | 20 (GT/s) |
| Thermal Design Power (TDP,Max): | 32 W |
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