Bus Speed: PC2-6400 (DDR2-800). eg: 4GB=(2x2GB) =2PCS 2GB PC2-6400. Frequency: 800MHz. 4GB=(1x4GB) =1PCS 4GB PC2-6400. RAM Type: DDR2 SO-DIMM 200-pin. Capacity Per Module:2GB/ 4GB. Total Capacity:2GB/4GB/8GB.
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