03-01-2012, 01:36 PM

I just recently bought another 4 GB of memory for my late 2011 13' Macbook pro and i thought i read somewhere that if i mix a 2GB and a 4GB instead of a 2GB and 2GB or 4GB and 4GB, it will effect performance. Is that true or does it not matter if i mix the amount of GB's?

Thanks

03-01-2012, 01:38 PM

Memory modules should always be installed as matched pairs. However, I don't think it's going to make a noticeable difference. You can always order another 4 GB module and install 8 GB instead of 6 GB.

03-01-2012, 01:45 PM

okay, i think ill just buy another 4GB one just to be sure. Does it matter if they are 2 different pairs? the first one i bought is a samsung and i was thinking about buying a Other World Computing one for the second 4GB cause its about 5 bucks cheaper.

Thanks

03-01-2012, 02:24 PM

That can be tricky. I've had both good and bad luck mixing manufacturers. If possible, try to stick with the same exact module from Samsung. Or if you can, get a refund on the Samsung module, and then order a matched pair from OWC. I buy all my memory from OWC and highly recommend them for updating your Mac with memory or hard drives.

03-01-2012, 04:27 PM

You take a chance with incompatibility by using 2 different brands. Having mismatched sizes means dual channel is not enabled, given the price of RAM no reason not to have 8GB.