Does an Mid-2010 iMac support 32GB 8x4 of ram?
Yes, it does.
Do not get OWC ram, mainly because it is overpriced.
If you are looking to upgrade get it from NewEgg.
Corsair 8GB DDR 1333
Model #: CMSA8GX3M1A1333C9
iMac, OS X Mountain Lion (10.8.2)
I am glad to hear that yours works, however, iMacs are very particular about the quality of their RAM. OWC and crucial are the two most recommended RAM sellers here. They both sell high quality products.
Good find, I've had Corsair RAM in my Early Intel iMac for years and never had any problem. Only difference between it and OWC or Crucial is, who's going to warranty the RAM if you ever have a problem...?
I found the same Corsair 8Gb 1333MHz but with model name CMSO8GX3M1A1333C9 instead of CMSA8GX3M1A1333C9
Do you think it should works? (sorry for my bad english)
They are both identical RAM (specs and parts). The difference between CMSO and CMSA is that the CMSA parts has been qualified on the Mac systems.
Thanks.
I found the CMSO for 27€ and I read it should works though Corsair reccomend using CMSA on Mac.
I don't know if buy it or not.
Giacomo,
It should work. I've read other forum confirming CMSO works fine on Mac.
Personally, I stick with the exact same specs that are supported by Apple and would buy RAM only from either of two sources: OWC (macsales.com) or Crucial. If incompatible RAM causes a problem and Apple can attribute it to the RAM, then you will have voided your warranty. Of course, if you're already past the warranty, it's not that important.
System start freezing after installing 32 GB ram. Suddenly wait cursor doesn't stop spinning and I can't do any operation. I've got to power off holding power button. Hardware test is ok.
Searching for the word "error" in the console I found this:
17/12/12 18:04:06,000 kernel: SMC::smcInitHelper ERROR: MMIO regMap == NULL - fall back to old SMC mode
17/12/12 18:04:09,043 WindowServer: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
17/12/12 18:04:09,888 Finder: kCGErrorIllegalArgument: _CGSFindSharedWindow: WID 31
17/12/12 18:04:09,888 Finder: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
17/12/12 18:04:09,888 Finder: kCGErrorIllegalArgument: CGSRemoveSurface: Invalid window 0x1f
17/12/12 18:04:17,891 talagent: CGSConnectionRelinquishWindowRights(cid, newWindowNumber, reservedRights): CGError 1001 on line 619
17/12/12 18:04:17,891 talagent: CGSReleaseWindow(cid, wid): CGError 1001 on line 759
I don't know if the problem is the ram upgrade or that I run Lion from an external SSD.
Also, this iMac just returned from service because show an error running hardware test.
They changed the logic board and a fan.
I don't know if the problem is the ram upgrade or that I run Lion from an external SSD.
Ok, RAM works, it's giving me problem running the system from external SSD.
Thanks johnbe !
32GB Mid-2010 iMac
