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cooky560

macrumors regular
Original poster
Jun 8, 2011
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Around
I know with windows there are rules about what can go in what slots (which is why the motherboards had different coloured slots) however I've never changed ram in an iMac before, so I was wondering if there are any rules or if I can just plug the ram straight in. Both the new and default sticks are ddr3 10600 (1333mhz)
 
There are rules, actually, but only if you are not filling all the slots.

http://support.apple.com/kb/ht1423#1


Additional notes i5 and i7 Quad Core iMac computers come with both top memory slots populated. These computers will not start up if only a single DIMM is installed in any bottom slot; these computers should operate normally with a single DIMM installed in any top slot. Core Duo iMac computers should operate normally with a single DIMM installed in any slot, top or bottom. ("Top" and "bottom" slots refer to the orientation of the slots in the pictures below. "Top" refers to the slots closest to the display; "bottom" refers to the slots closest to the stand).
 
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