Will my old 24" imac memory work in the new 27" imac?

johnnyfox · 09:38 AM

Hi guys - can anyone help me please? My old 24" iMac died on me (kernel panic and probable hardware failure). I am getting the new 27" iMac (I guess the i5 quad, as I use Aperture a lot).

I have 2 memory sticks (1GB and 2GB) from the old 24" which I want to use in the new 27", to increase the memory from 4GB to 7GB.

However, the old memory sticks are 667 speed (Kingston KVR667D2S5) - will they work together with the 1066 mhz ddr3 sdram in the new macs? As there are 4 slots, there is space, but does the memory have to be the same speed? Will it slow it down?

If I cannot use it, I will probably give it to a friend with an old imac - but maybe there is some use I can get out of the broken machine.

Thanks!
JF

rfrankl · Oct 25, 2009, 09:34 AM

Nope.

johnnyfox · Oct 25, 2009, 09:43 AM

Any reason it won't work - is it because the slots are physically different, or because the speed is different?

belvdr · Oct 25, 2009, 09:45 AM

Quote:

Originally Posted by johnnyfox

Any reason it won't work - is it because the slots are physically different, or because the speed is different?

The speed and the slots are different. The 667Mhz RAM is DDR2 and the new iMac uses DDR3.

Oct 25, 2009, 09:30 AM	#1
johnnyfox macrumors newbie Join Date: Oct 2009	Will my old 24" imac memory work in the new 27" imac? Hi guys - can anyone help me please? My old 24" iMac died on me (kernel panic and probable hardware failure). I am getting the new 27" iMac (I guess the i5 quad, as I use Aperture a lot). I have 2 memory sticks (1GB and 2GB) from the old 24" which I want to use in the new 27", to increase the memory from 4GB to 7GB. However, the old memory sticks are 667 speed (Kingston KVR667D2S5) - will they work together with the 1066 mhz ddr3 sdram in the new macs? As there are 4 slots, there is space, but does the memory have to be the same speed? Will it slow it down? If I cannot use it, I will probably give it to a friend with an old imac - but maybe there is some use I can get out of the broken machine. Thanks! JF Last edited by johnnyfox; Oct 25, 2009 at 09:38 AM. Reason: typos and spelling
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Oct 25, 2009, 09:34 AM	#2
rfrankl macrumors 6502 Join Date: Apr 2006	Nope.
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Oct 25, 2009, 09:43 AM	#3
johnnyfox Thread Starter macrumors newbie Join Date: Oct 2009	Any reason it won't work - is it because the slots are physically different, or because the speed is different?
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