Using 1333mhz ECC RAM in QC iMac?

jgmacrum · Mar 8, 2010, 02:48 PM

I'm not sure the details on mixing RAM types these days, particularly with ECC/non-ECC. I have the stock 27" i5 iMac (so presumably 2x2GB chips). I have 2 1333mhz ECC 1GB chips (http://www.eworldsale.com/samsung-dd...764_43363.html) available to me. Would it work to pop those in to the 2 empty slots in the computer or would mixing the types cause problems?

Hellhammer · 02:57 PM

AFAIK you can use it and trying it won't break anything.

EDIT: Is it desktop or laptop RAM (DIMM or SO-DIMM?) iMacs use SO-DIMMs (laptop RAM) so if that's desktop RAM it won't fit

666sheep · Mar 8, 2010, 02:59 PM

Nope. First, because you need SODIMM, not DIMM for your iMac, second cause it's chipset is not compatible with ECC memory.

jgmacrum · Mar 8, 2010, 03:10 PM

Good point about the laptop RAM, I didn't even think about that.

Mar 8, 2010, 02:48 PM	#1
jgmacrum macrumors member Join Date: Oct 2009	Using 1333mhz ECC RAM in QC iMac? I'm not sure the details on mixing RAM types these days, particularly with ECC/non-ECC. I have the stock 27" i5 iMac (so presumably 2x2GB chips). I have 2 1333mhz ECC 1GB chips (http://www.eworldsale.com/samsung-dd...764_43363.html) available to me. Would it work to pop those in to the 2 empty slots in the computer or would mixing the types cause problems?
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Mar 8, 2010, 02:52 PM	#2
Hellhammer Demi-God (Moderator) Join Date: Dec 2008 Location: Helsinki, Finland	AFAIK you can use it and trying it won't break anything. EDIT: Is it desktop or laptop RAM (DIMM or SO-DIMM?) iMacs use SO-DIMMs (laptop RAM) so if that's desktop RAM it won't fit __________________ SSD Editor for AnandTech You can also follow me in Twitter! Last edited by Hellhammer; Mar 8, 2010 at 02:57 PM.
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Mar 8, 2010, 02:59 PM	#3
666sheep macrumors 68020 Join Date: Dec 2009 Location: Poland	Nope. First, because you need SODIMM, not DIMM for your iMac, second cause it's chipset is not compatible with ECC memory.
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Mar 8, 2010, 03:10 PM	#4
jgmacrum Thread Starter macrumors member Join Date: Oct 2009	Good point about the laptop RAM, I didn't even think about that.
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