I have a self-built box with Gigabyte mobo that has 4 slots and accepts a max of 8Gb.
About 4 months ago, I added a pair of 2Gb DDR2 memory modules, and last week, one of the pair now fails boot-time memory test.
When I pull that module, the machine runs fine with the faulty one removed.
I want to go back to 8Gb; should I purchase another 2 x 2Gb pair or is it ok to simply purchase another DDR2 memory module of the same speed?
Is there any difference between a matched pair, and an unmatched pair (e.g. can I get a different brand?)