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NVIDIA GeForce GT 640 OEM Rebrand

NVIDIA GeForce GT 640 OEM Rebrand Image NVIDIA GF116 Image
The GeForce GT 640 OEM Rebrand is a graphics card by NVIDIA, launched in April 2012. Built on the 40 nm process, and based on the GF116 graphics processor, in its GF116-150-A1 variant, the card supports DirectX 11.0. The GF116 graphics processor is an average sized chip with a die area of 238 mm² and 1,170 million transistors. Unlike the fully unlocked GeForce GTX 550 Ti, which uses the same GPU but has all 192 shaders enabled, NVIDIA has disabled some shading units on the GeForce GT 640 OEM Rebrand to reach the product's target shader count. It features 144 shading units, 24 texture mapping units and 24 ROPs. NVIDIA has placed 1,536 MB DDR3 memory on the card, which are connected using a 192-bit memory interface. The GPU is operating at a frequency of 720 MHz, memory is running at 800 MHz.
We recommend the NVIDIA GeForce GT 640 OEM Rebrand for gaming with highest details at resolutions up to, and including, 800x600.
Being a single-slot card, the NVIDIA GeForce GT 640 OEM Rebrand does not require any additional power connector, its power draw is rated at 75 W maximum. Display outputs include: 2x DVI, 1x mini-HDMI. GeForce GT 640 OEM Rebrand is connected to the rest of the system using a PCIe 2.0 x16 interface. The card measures 145 mm in length, and features a single-slot cooling solution.

Graphics Processor

GPU Name: GF116
GPU Variant: GF116-150-A1
Architecture: Fermi
Process Size: 40 nm
Transistors: 1,170 million
Die Size: 238 mm²

Graphics Card

Released: Apr 24th, 2012
Production Status: Active
Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 720 MHz
Shader Clock: 1440 MHz
Memory Clock: 800 MHz
1600 MHz effective


Memory Size: 1536 MB
Memory Type: DDR3
Memory Bus: 192 bit
Bandwidth: 38.4 GB/s

Render Config

Shading Units: 144
TMUs: 24
ROPs: 24
SM Count: 3
Pixel Rate: 4.32 GPixel/s
Texture Rate: 17.28 GTexel/s
Floating-point performance: 414.7 GFLOPS

Board Design

Slot Width: Single-slot
Length: 5.7 inches
145 mm
TDP: 75 W
Outputs: 2x DVI
1x mini-HDMI
Power Connectors: None
Board Number: P1062

Graphics Features

DirectX: 11.0
OpenGL: 4.5
OpenCL: 1.1
CUDA: 2.1
Shader Model: 5.0


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Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
ASUS GT 640 DP 3 GB 720 MHz 800 MHz 3072 MB, 1x DVI 1x HDMI 1x DisplayPort