I just got a new iMac 27 inch, and from
if I buy those 8GB, then I can add them to the original 4GB and make it 12GB, it seems.
But I wonder why these are 1.5V and the crucial website also list these other RAM which is 1.35V for the same system:
It just seems strange that either 1.5V RAM or 1.35V RAM are both ok. Does somebody know why?
(it also seems that I can buy the 8GB set, and then the 4GB set http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=C330E0DDA5CA7304 and the computer will now have 16GB? For an extra $26 I am tempted to do it, to have 16GB instead of 12GB, but it just seems weird to have that much RAM... can the computer use that much RAM? Even if I run a virtual machine for Windows 7 for 4GB and one for Ubuntu for 2GB, that's only 6GB)