Upgrade RAM

[Manhatten]

Yes, another RAM question, but I have failed to find an answer by searching the forum.

I will be the owner of an iMac 27" i5 next week and it will be my first mac.

Standard RAM is the 2*2gb. The question is whether I can buy a 4gb ram and put it in together with the 2*2gb (8GB total)? Or do I have to fill all four slots.

 

[S.B.G]

You can do that and it should work just fine. Some folks feel that it is better to have matched pairs, while others see no difference either way.

 

[Manhatten]

Thank you for a superfast reply!

 

[Hellhammer]

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).

http://support.apple.com/kb/HT3918

 

[Manhatten]

http://support.apple.com/kb/HT3918

If I got that right, I will be fine installing a 4GB in the top slot?

 

[S.B.G]

http://support.apple.com/kb/HT3918

Interesting. I learned something new today!

 

[Hellhammer]

If I got that right, I will be fine installing a 4GB in the top slot?

Yeah. Just move the original sticks from top slots to bottom slots and it should work

 

[greg0rn]

If I got that right, I will be fine installing a 4GB in the top slot?

Check the instructions again for contradiction:

("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).

Is "top" located according to the drawings, or to the description?