7 Replies Latest reply: May 18, 2012 1:42 AM by dantelo
shinypikachu Level 1 Level 1

Hi. My iMac currently has a 1Gig 800 DDR2 memory stick inserted and I was wondering if I can add a 1Gig 667 DDR2, or do I have to use another 800 DDR2?

Just wondering if I have to buy another one, or use the one I already have but has different speed.

iMac, Mac OS X (10.6)
Solved by iCare on May 16, 2012 10:49 AM Solved
It sounds like you have an iMac Early 2008 model which does require the 800 MHz DIMM's. I wouldn't chance putting a slower DIMM in your system. IF it were the other way around I would have a different response.
Reply by iCare on May 16, 2012 10:40 AM Helpful
Which model iMac do you have? You really need to make sure you use the correct memory for your specific system. You can use this article to locate your model and then find out what the memory requirements are. http://support.apple.com/kb/HT1423
Reply by BDAqua on May 16, 2012 10:51 AM Helpful
Not totally impossible that some 667 RAM could support higher speeds, but not at all likely it would, & the RAM must be able to perform at 800 & have certain info programmed into it. http://eshop.macsales.com/shop/memory/iMac/Intel_Core_2_Duo_PC2-6400

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