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GeForce GT 640
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ASUS GT 640 Specs | TechPowerUp GPU Database
MSI N640-2GD3/V1 NVIDIA GeForce GT 640 2GB DDR3 128bit PCI-Express 3.0 Desktop Graphics Card - Wootware
ZOTAC GeForce GT 640 2GB GDDR5 | VideoCardz.net
GeForce GT 640
