While mismatched RAM won't kill your system, you do lose some performance. Depending on the amount of RAM you have, that performance loss could be significant.
It's in your best interest to get a matched pair when installing RAM - if anything it's one less element to troubleshoot if something goes awry.
There is certainly nothing wrong with OWC RAM - I've purchased from there before. However, my last RAM upgrade (16GB for my 2011 MBP 17") was purchased from newegg.com, via a friend in Texas since I'm in Canada and they don't like selling to Canadians.
I got it for about $40.
If $$$ is the deciding factor, search around at some of the sites mentioned here. I personally wouldn't buy RAM from eBay or the like because you can't be sure you're getting what they say you're getting. Buy from a reputable source and you're generally not going to have any issues with RAM purchases.
I'd agree with those who've said that 16GB (2x8) may be better. Sure, it's maybe a little on the overkill side, but you can never have too much RAM.
Good luck.
It's in your best interest to get a matched pair when installing RAM - if anything it's one less element to troubleshoot if something goes awry.
There is certainly nothing wrong with OWC RAM - I've purchased from there before. However, my last RAM upgrade (16GB for my 2011 MBP 17") was purchased from newegg.com, via a friend in Texas since I'm in Canada and they don't like selling to Canadians.
If $$$ is the deciding factor, search around at some of the sites mentioned here. I personally wouldn't buy RAM from eBay or the like because you can't be sure you're getting what they say you're getting. Buy from a reputable source and you're generally not going to have any issues with RAM purchases.
I'd agree with those who've said that 16GB (2x8) may be better. Sure, it's maybe a little on the overkill side, but you can never have too much RAM.
Good luck.