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Specifications
Product Family
Specifications
Note: The below specifications represent this GPU as incorporated into NVIDIA's reference graphics card design. Graphics card specifications may vary by Add-in-card manufacturer. Please refer to the Add-in-card manufacturers' website for actual shipping specifications.
GPU Engine Specs:
| Graphics card version | GT 640 128-bit DDR3 |
GT 640 192-bit DDR3 |
GT 640 128-bitGDDR5 |
| CUDA Cores | 384 | 144 | 384 |
| Graphics Clock (MHz) | 797 | 720 | 950 |
| Processor Clock (MHz) | 797 | 1440 | 950 |
| Texture Fill Rate (billion/sec) | 25.5 | 17 | 30.4 |
Memory Specs:
| Memory Clock (MHz) | 891 | 891 | 2500 |
| Standard Memory Config | 1 or 2GB DDR3 | 1.5 or 3GB DDR3 | 1 or 2GB GDDR5 |
| Memory Interface Width | 128-bit | 192-bit | 128-bit |
| Memory Bandwidth (GB/sec) | 28.5 | 43 | 80 |
Feature Support:
| OpenGL | 4.2 | 4.2 | 4.2 |
| Bus Support | PCI Express 3.0 | PCI Express 2.0 | PCI Express 3.0 |
| Certified for Windows 7 | Yes | Yes | Yes |
| Supported Technologies | CUDA, PhysX, 3DVision | CUDA, PhysX, SLI, 3DVision | CUDA, PhysX, 3DVision |
| Microsoft DirectX | 12 API | 12 API | 12 API |
Display Support:
| Maximum Digital Resolution | 3840x2160 | 3840x2160 | 2560x1600 |
| Maximum VGA Resolution | 2048x1536 | 2048x1536 | 2048x1536 |
| HDCP | Yes | Yes | Yes |
| HDMI | Yes | Yes | Yes |
| Standard Display Connectors | VGA, HDMI, DVI-D | VGA, HDMI, DVI-I | VGA, HDMI, DP |
| Audio Input for HDMI | Internal | Internal | Internal |
Standard Graphics Card Dimensions:
| Length | 5.7 inches | 5.7 inches | 5.7 inches |
| Height | 2.731 inches | 4.38 inches | 4.38 inches |
| Width | Single slot | Single slot | Single slot |
Thermal and Power Specs:
| Maximum GPU Temperature (in C) | 102 | 102 | 102 |
| Maximum Graphics Card Power (W) | 50 | 75 | 75 |
3D Vision Ready:
Yes3D Blu-Ray
Yes3D Gaming
Yes3D Photos
