I have recently decided to upgrade my Compaq Presario 5441. I added WIN XP and put in a GeForce MX420 Graphics card (PITA). Now I want to make it faster (I'm not a hardware guy...), I am thinking of upgrading the RAM. After reading the computer manual it says that it takes DIMM 1? Also, I checked how much was already in there and it says 64... So basically I want to know if upgrading the RAM will greatly improve the performance, and what other upgrades I can do. Thanks!