2X8 would also be a bit faster than 4x4 and grant you more stable overclocks as well. Provided you stick them in slot 2 and 4 and not 1 and 2 or 1 and 3.
The new iMacs & MBP's RAM are soldered on the motherboard, meaning you can't upgrade it yourself.
Originally Posted by Vinho
can you elaborate a little on this? why 2 and 4 and not 1and2 or 1and3?
Originally Posted by Lemmiwink