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Corsair TWINX 2048MB PC6400 DDR2 800mhz



Corsair Value Select Dual Channel 2048MB PC4200 DDR2 Memory (2 x 1024MB) http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=1169989


are these compatible with my hp pavilion a1221n? thanks


You'll have to get the PC2-4200 memory. The Intel 915 series chipset only supports up to DDR2-533 (PC2-4200) maximum speed. In addition, no OEM system has any provision at all whatsoever to manually adjust the DIMM voltage.

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