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Courso

macrumors newbie
Original poster
Aug 18, 2017
3
1
I got brand new iMac 27 2017 today with stock 8GB, and ordered Mac certified crucial memory 32gb.
When I try to boot up with both in (correctly installed) the iMac won't boot, when I put one or the other alone it boots as well. When I was running only 32 gb crucial the iMac suddenly shut down and do not want to boot again, with the crucial memory, boots only with the stock one.

I requested a refund for the crucial but I am now in a big trouble, as I need more ram and I am not confident anymore what to do. I do not want to buy 32GB from apple and pay 700 pounds.
 

SaSaSushi

macrumors 601
Aug 8, 2007
4,156
554
Takamatsu, Japan
What slots did you have the RAM installed in?

Returning the Crucial may not have been necessary.

While you may have gotten a bad module, there is zero reason to think that Corsair would serve you any better than Crucial. Crucial is the consumer division of Micron who make the Apple RAM.
 
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RUQRU

macrumors 6502
Apr 14, 2011
370
362
***WITSEC***
I installed this bringing my iMac to 40GB with zero issues:

Crucial 32GB Kit (16GBx2) DDR4 2400 MT/s (PC4-19200) DR x8 SODIMM 260-Pin for Mac - CT2K16G4S24AM
https://www.amazon.com/gp/product/B072K5NPRM/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

Watch the pricing as it changes frequently (Amazon makes you return items and reorder to get lower prices if you are in return window):
2017-08-30_13-42-22.jpg
 
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