512MB PC2-4200 DDR2 Memory Compaq Presario SR1639FR (Intel 910GE) RAM
Compaq Presario SR1639FR (Intel 910GE) 512MB,DDR2 PC2-4200, 512MB-533MHz DDR2-533 PC2-4200 240pin DIMM 1.8v.These are usualy used in dual channel Please Order Qty 2 for Dual Channel use.