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Discussion in 'iMac' started by haddy, Aug 18, 2013.
Anyone got this in their late 2012 iMac and where did they get it from?
I am not sure if 1866MHz RAM works in 2012 iMac. But I believe that even if it works, it will only operate on 1600MHz.
Yeah RAM will only work at the max speed of the computer.
Just get the right RAM for your iMac to be sure.
1866MHZ RAM will be probably in the next imac upgrade with new main board
Until someone tests it, no-one knows what speed 1866MHz ram will run at in a 2012 iMac.
It *might* run at 1600. But it *might* run at 1866.
It all depends on how Apple have implemented the chipset and EFI. In some previous Mac Minis 1866 ram ran at 1866. I believe in the latest Mini it runs at 1600.
Someone needs to test it.
There is no chance of 1866 being "standard" on the next iMac though, since anything above 1600 is higher than the Intel spec and Apple will not release a computer that runs out of spec as standard. No chance.
Hi, I tend to use Corsair Vengeance RAM. It's compatible and runs at 1866MHz. (see: http://www.overclockers.co.uk/showproduct.php?prodid=MY-364-CS&groupid=701&catid=8&subcat=1264)
However, I must really advise against doing this. I've had 1600MHz sticks running in the Sandybridge MBPs and they almost always have issues with freezing (occasionally they get kernel panics). I've also had the same problem running 1866MHz RAM in the Ivybridge systems. They freeze from time-to-time.
Plus the performance increase you get from an additional 266MHz is not worth the issue with stability. I guarantee that you will have some problems if you put 1866MHz RAM into your iMac. However, it will run at that speed and show as being 1866MHz in 'About This Mac'.
So yes: it will work and it is compatible. But no: don't do it, because compatible=/=stable.
Thanks guys.....someone on MacRumors suggested:
However, Amazon won't deliver here [NZ]. And your advice has put me off pursuing.
I have 8Gb of Kingston HyperX 1866Mhz on my Mac Mini 2012, they are clocked at 1600Mhz. On my old Mac Mini 2011 they were running at 1866Mhz...
You have them installed on their own (no other sticks in there)?
Your result seems odd, given keysofanxiety's post above.
I just installed 1866Mhz memory into my late 2012 iMac 27'' i5. Works fine, but runs at 1600Mhz. Actually I have it mixed with the original memory that is 1600Mhz. Works fine.
I installed Kingston memory KHX1866C11S3P1K2/8G