NVIDIA GeForce GT 640 GDDR5
| General information | |
| Vendor | NVIDIA |
| Released | 2012 |
| Segment | Desktop |
| Type | DIntegratedscrete |
| Interface | PCIe 3.0 |
| Resolution | 3840 x 2160 |
| Graphics processor | |
| Architecture | Kepler |
| Core | GK208 |
| Number of GPUs | 1 |
| Lithography | 28 nm |
| Number of transistors | 1020 million |
| Die Size | 79 mm² |
| Core frequency | 1046 MHz |
| Shading Units | 384 |
| ROPs | 8 |
| TMUs | 32 |
| Pixel Rate | 4,3 GPixel/s |
| Texture Rate | 16.7 GTexel/s |
| Memory | |
| Type | GDDR5 |
| Capacity | 1024 / 2048 Mb |
| Frequency | 5000 MHz |
| Bus | 64 bit |
| Bandwidth | 40.0 GB/s |
| Power supply | |
| TDP | 49 W |
| Maximum temperature | 95° C |
| Power supply requirements | 300 W |
| Power connectors | No |
| Supported technologies | |
| DirectX | 11.0 |
| OpenGL | 4.2 |
| OpenCL | 1.2 |
| Shader Model | 5.0 |
| Other | • NVIDIA Adaptive V-Sync • HDCP • NVIDIA CUDA • NVIDIA PureVideo • NVIDIA PhysX • NVIDIA 3D Vision • FXAA |
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