Hey Guys! I've been doing a lot of reading about the best RAM to use to upgrade my mid 2011 21.5 iMac... I know a lot of people on here reckon Crucial is pretty much the best bet, so I went on their site and did the system selector thingy and found this one...(I'm after 2x8GB sticks) http://www.crucial.com/uk/store/mpartspecs.aspx?mtbpoid=01FD4E70A5CA7304 Is that the same as these ones on Amazon? They do look the same to me but admittedly i'm not too hot on these things so I wondered if any of you guys had bought these... http://www.amazon.co.uk/Crucial-PC3...4C820/ref=cm_cr_pr_product_top#productDetails Quite a bit cheaper on Amazon so i'd rather go that route if they're the same! Thanks for any helpers out there!