NVIDIA GeForce GTX 645

Step up to the GeForce® GTX 645 for next-gen PC gaming at a remarkable price.

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Take your passion for PC gaming to the next level by stepping up to the industry’s leading family of gaming graphics cards with the GeForce® GTX 645 (OEM). Play your favorite FPS and MMO PC games with full DirectX 11 support that blows away your old DirectX 10 card’s performance by up to 6x. Plus, you can count on the GTX 645’s revolutionary next-gen NVIDIA® Kepler™ architecture for stunning graphics, rock solid performance and 1080p HD brilliance in the hottest PC game titles—at a remarkable price.

Kepler Architecture

Kepler Architecture

Kepler is our most advanced GPU architecture yet. Optimized for DirectX 11, Kepler is not only fast, but ultra power efficient.

Richer Gameplay

Richer Gameplay

Enjoy your PC games across three monitors in NVIDIA Surround mode. Turn on PhysX and 3D Vision for extra immersion.


NVIDIA® Kepler™ GPU Architecture

NVIDIA's Kepler GPU architecture has been designed from the ground up not just for maximum performance in the latest DirectX 11 games, but optimal performance per watt. The new SMX streaming multiprocessor is twice as efficient as the prior generation and the new geometry engine draws triangles twice as fast.

SMX (streaming multiprocessor extreme)

Next-generation streaming multiprocessor built from the ground up for incredible performance and power efficiency.

Microsoft® DirectX® 11 Support

DirectX 11 GPU with Shader Model 5.0 support designed for ultra-high performance in the API’s key graphics feature, GPU-accelerated tessellation.

NVIDIA FXAA Technology

Shader-based antialiasing technology available from the NVIDIA Control Panel that enables ultra-fast antialiasing in hundreds of PC games.

NVIDIA Adaptive Vertical Sync

Dynamically enables vertical sync based on your current frame rates for the smoothest gaming experience.


Support for HDMI, including GPU-accelerated Blu-ray 3D support, x.v.Color, HDMI Deep Color, and 7.1 digital surround sound.

Dual-link DVI

Able to drive flat-panel displays with up to 2560x1600 resolution over a DVI connector.

PCI Express 3.0

Designed for the new PCI Express 3.0 bus architecture offering the highest data transfer speeds for the most bandwidth-hungry games and 3D applications, while maintaining backwards compatibility with existing PCI Express motherboards for the broadest support.


Drive the latest DisplayPort panels with support for resolutions up to 2560x1600.

1 - NVIDIA 3D Vision requires 3D Vision glasses and a 3D Vision-Ready monitor. See for more information.
2 - NVIDIA Surround requires 3D Vision glasses and three matching 3D Vision-Ready displays. In addition, a DisplayPort to Dual-link DVI adapter may be required to connect one of the 3D Vision Surround monitors. See for more information.
3 - Supported video software is required to experience certain features. Visit for more details.
4 - Blu-ray 3D playback requires the purchase of a compatible software player from CyberLink, ArcSoft, Corel, or Sonic. Upgrade your GPU to full 3D capability with NVIDIA 3DTV Play software, enabling 3D gaming, picture viewing, and 3D web video streaming. See for more details.


NVIDIA GeForce GTX 645 (OEM)

GPU Engine Specs

CUDA Cores


Base Clock

823 MHz

Texture Fill Rate


Memory Specs

Memory Speed ( Gbps )


Memory Amount

1024 MB

Memory Interface

128-bit GDDR5

Max Bandwidth


Card Features



3D Vision


Programming Environment






Bus Type

PCI-E 3.0

3D Gaming

Blu Ray 3D


Maximum Digital Resolution


Max VGA Resolution


Media Connection

  • Dual Link DVI-D
  • DisplayPort
  • Dual Link DVI-I
  • HDMI




HDMI Audio




4.376 Inches


5.7 Inches


Single Slot

Power and Temperature

Maximum Temperature

97 C

Power Consumption

130 W

Minimum Power Requirement

450 W

NVIDIA SLI® Ready - GeForce GTX 645 (OEM) supports PCI Express 3.0. The Intel X79/SNB-E PCI Express 2.0 platform is only currently supported up to 5GT/s (PCIE 2.0) bus speeds even though some motherboard manufacturers have enabled higher 8GT/s speeds.

Maximum Digital Resolution - 4096x2160 resolution supported through a single HDMI connector. 4096x2160 resolution is not supported with two DVI connectors.

HDMI - Support for HDMI including GPU accelerated Blu-ray 3D support (Blu-ray 3D playback requires the purchase of a compatible software player from CyberLink, ArcSoft, Corel, or Sonic), x.v.Color, HDMI Deep Color, and 7.1 digital surround sound will be added in a Release 260 driver. Upgrade your GPU to full 3D capability with NVIDIA 3DTV Play software, enabling 3D gaming, picture viewing and 3D web video streaming. See for more details.

Minimum Recommended System Power - PCs with the GeForce GTX 645 (OEM) may be qualified by the manufacturer to run at lower power supply than noted above. Please consult your PC manufacturer for details.


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Hardware Support

Technical Support, RMA requests, replacements, and warranty issues for your NVIDIA designed and built graphics cards will be handled by NVIDIA.
Please click here to be directed to the GeForce Graphics Cards by NVIDIA customer support page. If you purchased your GeForce graphics card from one of our board partners, click here.




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