Refurbished and Used Hardware | ZOTAC GeForce GT 640 4GB DDR3 PCI Express (PCIe) DVI Video Card w/HDMI & HDCP Support
ASUS GT 640 4 GB Specs | TechPowerUp GPU Database
GeForce GT 640 EVGA 4GB Edition Can Run PC Game System Requirements
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Specification N640-2GD3/V1 | MSI Global - The Leading Brand in High-end Gaming & Professional Creation
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NVIDIA GeForce GT 640 Specs | TechPowerUp GPU Database
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MSI GT 640 4 GB Specs | TechPowerUp GPU Database
NVIDIA GeForce GT 640 review roundup: a $99 card that fails to keep Kepler's promise | Engadget
MSI GT 640 2048MB DDR3 Graphics Card N640GT-MD2GD3 B&H Photo
Musing About Memory Bandwidth & The Test - Zotac GeForce GT 640 DDR3 Review: Glacial Gaming & Heavenly HTPC
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EVGA - Articles - EVGA GT 640 Graphics Cards
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EVGA GT 640 4 GB Specs | TechPowerUp GPU Database
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