2GB [2x1GB] RAM Memory Upgrade for the Dell Dimension 4600 (DDR-400, PC3200) Guaranteed Compatible for the Dell Dimension 4600 Speed up your system with up to 4.0GB of Memory! 4AllMemory Branded RAM comes with a lifetime replacement warranty! Will ship the same day when ordered at or before 4pm EST! All others ship next day! Fully-staffed call center to help with installation or inquiries! Call 866-335-1355 with questions or for help!