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CMS 2GB (1X2GB) DDR2 5300 667MHZ NON ECC SODIMM Memory Ram Compatible with Ibm Lenovo Ideapad Y330, Y510, Y430 2781-73U/2781-74U Pc2-5300 - A38 - Walmart.com
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Why Windows Vista only sees 3GB memory in a PC with 4GB RAM and how Vista SP1 fools its users – 4sysops
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