NVIDIA GeForce GT 640
| General information | |
| Vendor | NVIDIA |
| Released | 2012 |
| Segment | Desktop |
| Type | DIntegratedscrete |
| Interface | PCIe 3.0 |
| Resolution | 3840 x 2160 |
| Graphics processor | |
| Architecture | Kepler |
| Core | GK107 |
| Number of GPUs | 1 |
| Lithography | 28 nm |
| Number of transistors | 1300 million |
| Die Size | 118 mm² |
| Core frequency | 900 MHz |
| Shading Units | 384 |
| ROPs | 16 |
| TMUs | 32 |
| Pixel Rate | 7,2 GPixel/s |
| Texture Rate | 28.8 GTexel/s |
| Memory | |
| Type | GDDR3 |
| Capacity | 2048 Mb |
| Frequency | 1782 MHz |
| Bus | 128 bit |
| Bandwidth | 28.5 GB/s |
| Power supply | |
| TDP | 65 W |
| Maximum temperature | 98° C |
| Power supply requirements | 350 W |
| Power connectors | No |
| Supported technologies | |
| DirectX | 11.0 |
| OpenGL | 4.2 |
| OpenCL | 1.2 |
| Shader Model | 5.0 |
| Other | • NVIDIA CUDA • NVIDIA Adaptive V-Sync • HDCP • NVIDIA PureVideo HD • NVIDIA PhysX • NVIDIA 3D Vision • FXAA |
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