240 Pin DDR2 1100 MHz PC2 -8800

The DDR has 184 Pin DIMM, Single Notched, Two operations per clock cycle whereas the SDRAM has 168 Pin DIMM, Double Notched, One operation per clock cycle. In the latest motherboards, DDR is superseded by the newer DDR2 DIMMs. DDR2 can effectively operate at twice the bus speed of DDR.

184 Pin DIMM
168 Pin DIMM

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