PC4200 memory compatible on computer with PC2100 ?? Tags: Computer Compatibility Memory Components Last response: January 20, 2007 4:56 AM in Components Share waltereo January 20, 2007 4:07:37 AM Hi, Does my computer still work fine if I put PC4200 memory when it requires PC2100 memory ?? Thanks More about : pc4200 memory compatible computer pc2100 runswindows95 January 20, 2007 4:37:33 AM PC2100 is DDR generally PC4200 is DDR2 generally So, no, you can't put PC4200 into a system that uses PC2100. SEALBoy January 20, 2007 4:56:09 AM The two RAM sticks are physically different. Can't find your answer ? Ask ! Publish Related resources: ForumWill PC4200 DDR RAM work with this computer setup? ForumWill PC4200 memory (ie 533MHz) can replace PC3200 (400MHz).. ForumIs there compatible ram for 533 ForumDifference bewteen PC2100 and PC2700 Memory ForumPC2100 vs PC2700 Toshiba Laptop Computer ForumOverclocking a P4 3.0C With PC4200 RAM ForumPC4200 ForumPC3200 RAM in a PC2100 slot? ForumMotherboard for PC2100 RAM? ForumCan I mix PC2100 and PC3200 RAM? Will it slow things down? ForumPC2100 versus PC2700 ForumPC100, PC150, PC2100 , or PC2400 ForumPC2100 vs PC1600 ForumIs DDR downwards compatible ? ForumIs 845G limited to PC2100 ? ForumDell 4400, Win XP PRO, and PC2100 ForumP4M800Pro-M & DDR2 RAM Problem ForumIs pc2100 RAM compatible with a pc3200 board ForumHd 6770 atx 450w psu ForumHelp with upgrading More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !