On the outside, the iMac 27-inch (Thunderbolt) looks just like its aluminum and glass predecessors. It has the same huge 27-inch 2,560-by-1,440 resolution display, which is formatted with a 16:9 ...
I am thinking about taking my mid 2011 iMac to 16GB of RAM from 12, just because... My question is, why do they offer seemingly identical RAM with different voltages that both show up as compatible ...