I'm looking to upgrade my 8,2 Macbook Pro (early 2011 15" quad i7) to 8 gigs of ram. I'll probably go with one of these (unless somebody else has a better suggestion): http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=82E796F8A5CA7304 http://eshop.macsales.com/item/Other World Computing/1333DDR3S08S/ The only major difference I see is the component configuration. Crucial is using a 512x64 configuration. I asked them about how those numbers worked out, and they told me to divide by 8 (so I guess it's 512 megabits instead of 512megabytes.) Anyway, that comes out to 64 MB * 64 OWC looks like they're using 256MB*16 (although I have to check with them on that because it also says "Comp. Config: 128Meg x 8" on that same page, which doesn't make any sense. ANYWAY, does the component configuration have any effect on RAM performance?