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CMS 8GB (2X4GB) DDR2 5300 667MHZ ECC Fully BUFFERED DIMM Memory Ram Compatible with HP/Compaq Workstation Xw8600 Series Ddr2-Pc5300 Fb for Server Only - B54 at Amazon.com
Samsung M378T2953EZ3-CE6 Computer Memory 1GB 2Rx8 PC2-5300U 41X4256 at Amazon.com