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NVIDIA GeForce GTX 645 OEM Image NVIDIA GK106 Image
The GeForce GTX 645 OEM is a graphics card by NVIDIA, launched in April 2013. Built on the 28 nm process, and based on the GK106 graphics processor, the card supports DirectX 12.0. The GK106 graphics processor is an average sized chip with a die area of 221 mm² and 2,540 million transistors. Unlike the fully unlocked GeForce GTX 660, which uses the same GPU but has all 960 shaders enabled, NVIDIA has disabled some shading units on the GeForce GTX 645 OEM to reach the product's target shader count. It features 576 shading units, 48 texture mapping units and 16 ROPs. NVIDIA has placed 1,024 MB GDDR5 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 824 MHz, memory is running at 1000 MHz.
We recommend the NVIDIA GeForce GTX 645 OEM for gaming with highest details at resolutions up to, and including, 1280x720.
Being a single-slot card, the NVIDIA GeForce GTX 645 OEM does not require any additional power connector, its power draw is rated at 65 W maximum. Display outputs include: 1x DVI, 2x DisplayPort. GeForce GTX 645 OEM is connected to the rest of the system using a PCIe 3.0 x16 interface. The card measures 147 mm in length, and features a single-slot cooling solution.

Graphics Processor

GPU Name: GK106
Architecture: Kepler
Process Size: 28 nm
Transistors: 2,540 million
Die Size: 221 mm²

Graphics Card

Released: Apr 22nd, 2013
Production Status: Active
Bus Interface: PCIe 3.0 x16

Clock Speeds

GPU Clock: 824 MHz
Memory Clock: 1000 MHz
4000 MHz effective


Memory Size: 1024 MB
Memory Type: GDDR5
Memory Bus: 128 bit
Bandwidth: 64.0 GB/s

Render Config

Shading Units: 576
TMUs: 48
ROPs: 16
SMX Count: 3
Pixel Rate: 9.89 GPixel/s
Texture Rate: 39.6 GTexel/s
Floating-point performance: 949.2 GFLOPS

Board Design

Slot Width: Single-slot
Length: 5.78 inches
147 mm
TDP: 65 W
Outputs: 1x DVI
2x DisplayPort
Power Connectors: None
Board Number: P2010 SKU 20

Graphics Features

DirectX: 12.0
OpenGL: 4.5
OpenCL: 1.2
CUDA: 3.0
Shader Model: 5.0


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Card Notes

OEM only
DPUs: 192
SFUs: 96