NVIDIA GeForce GT 640M
| General information | |
| Vendor | NVIDIA |
| Released | 2012 |
| Segment | Laptop |
| Type | DIntegratedscrete |
| Resolution | 3840 x 2160 |
| Graphics processor | |
| Architecture | Kepler |
| Core | GK107 |
| Number of GPUs | 1 |
| Lithography | 28 nm |
| Number of transistors | 1270 million |
| Die Size | 118 mm² |
| Core frequency | 625 MHz |
| Shading Units | 384 |
| ROPs | 8 / 16 |
| TMUs | 32 |
| Pixel Rate | 5 / 10 GPixel/s |
| Texture Rate | 20 GTexel/s |
| Memory | |
| Type | DDR3 / GDDR5 |
| Capacity | до 2048 Mb |
| Frequency | 1800 / 5000 MHz |
| Bus | 64 / 128 bit |
| Bandwidth | 28.8 / 40 GB/s |
| Power supply | |
| TDP | 32 W |
| Supported technologies | |
| DirectX | 11.2 |
| OpenGL | 4.4 |
| OpenCL | 1.1 |
| Shader Model | 5.0 |
| Other | • NVIDIA SLI • HDCP • NVIDIA CUDA • NVIDIA PhysX • NVIDIA 3D Vision • NVIDIA Optimus |
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