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ASUS GT 640 Formula II Specs | TechPowerUp GPU Database
NVIDIA GeForce GT 640 Specs | TechPowerUp GPU Database
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iXBT Labs - i3DSpeed, August 2012 - NVIDIA GeForce GT 640 2048MB 128-bit GDDR3 (901/1802/1782 MHz)
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GeForce GT 640 (OEM) | Product Images | GeForce
GIGABYTE GT 640 OC Specs | TechPowerUp GPU Database
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MSI GT 640 V1 Specs | TechPowerUp GPU Database
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GeForce GT 640 (OEM) | Product Images | GeForce
Amazon.com: EVGA GeForce GT 640 2048MB GDDR3 Dual DVI, mHDMI Graphics Cards 02G-P4-2643-KR : Electronics
EVGA GeForce GT 640 2048MB Review - PCGameBenchmark
WinFast GT 640 Low Profile | Graphics Cards - Leadtek
