I recently ordered a 4GB PC-8500 1066MHz) RAM module. I took out one of the 1GB modules and put the 4GB module in it's place, now there is a 1GB and 4GB module in the slots. I realize that this is mismatched; different size and different manufacturer.
I started up the laptop and it recognized a total of 5GB RAM. Cool, right? For some reason, it is running slower and freezes more often than usual. I decided to boot up my Memtest86 disk (that test is currently running and hasn't finished) to see what was wrong.
My question is: if it does turnout that the problem is because of the mismatched RAM, could I just leave out the 1GB module, only leaving the new 4GB module? Would that solve the problem? Or do I have to return this and go buy a 4GB kit (2GB * 2)?
Thank you in advance!
EDIT: And if I remove the 1GB, will the performance still suffer because of the loss of dual-channel? Even with 4GB RAM?
Edited by DJD520, 19 May 2011 - 11:43 AM.