Review on 💪 Enhance Performance with OWC 12.0GB (8GB+4GB) DDR3 SO-DIMM Memory Upgrade Kit by Petr Webster

Looks like one or more of the 4 memory cards we ordered are lemons. Worked great for a couple of weeks and increased the speed of our 2011 iMac. But then the screen went black and he started beeping loudly in groups of three. The researchers said to take the cards out and put them back in, as a code of 3 beeps meant a memory problem. It does not work. I took out new ones (4-4 gigs), put in old ones (4-2 gigs) and everything worked. It is a pity. Not sure if this is common. The good news is that both Revain and Other World Computing have helped return and refund items. I might try again, although I'm not sure I'll trust this brand.