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CMS 8GB (4X2GB) DDR2 6400 800MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 745, 745C Series Desktop - A92 at Amazon.com
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1GB RAM Memory for Dell OptiPlex 745 Energy Smart 240pin PC2-4200 DDR2 DIMM 533MHz Black Diamond Memory Module Upgrade - Newegg.com
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OptiPlex 745 Small Form Factor ( SFF) Removal Guide for the Memory, Heatsink, Power Supply and System Fan | Dell New Zealand
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Refurbished: Dell Optiplex 745 Tower - 2.1GHz Intel Core 2 Duo Processor - 2GB Memory - Windows 7 Home Premium - Newegg.com
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