2GB kit [2x1GB] RAM Memory Upgrade for a Dell Dimension 4700 Series System (DDR2-533, PC2-4200) Product manufacturer will be Hynix, Infineon, or another top ten manufacturer. Guaranteed Compatible with the Dell Dimension 4700 Speed up your system with up to 4.0GB of Memory! 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!