I do know that RAM has speed, listed in MHz, and Capacity, listed in MB/GB
So, my system has currently 2GB (2x1GB) of PC2-5300 modules installed, running at 667mhz
Crucial.com says my system can handle PC2-6400, which runs at 800mhz.
I ordered 2GB (2x1GB) of the PC2-6400.
I don't know if i should "add" these to the empty slots (i have four RAM Slots total) or should i "replace" these and run at 800mhz. I do believe that the system will run at the slowest mhz speed i have installed.
So...should i go 4GB at 667 or 2Gb at 800?
Edited by Derek Ellis, 28 February 2010 - 10:14 PM.