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ZOTAC GeForce GT 640 4GB DDR3 PCI Express Video Card (Renewed) : Amazon.co.uk: Computers & Accessories
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Amazon.com: ZOTAC GeForce GT 640 2GB GDDR3 PCI Express 3.0 HDMI DVI VGA Low Profile Ready Graphics Card ZT-60203-10L : Electronics
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ZOTAC GeForce GT 640 900Mhz PCI-E 3.0 2048Mb 1782Mhz 128 bit 2xDVI Mini-HDMI HDCP Silent Graphics Card specifications, review and features
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