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CMS 4GB (2X2GB) DDR2 5300 667MHZ Non ECC DIMM Memory Ram Upgrade Dimm Compatible with The Dell® Optiplex 745 Desktop Memory Ram Upgrade - A88 at Amazon.com
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Refurbished: Dell Optiplex 745 Mini Tower Pentium D Dual Core, 3.4 Ghz, 500 Gb Hard Drive, 4 Gb Ram, Windows 7 Home Premium - Newegg.com
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