The memory upgrade kit that I purchased from OWC arrived on time, contained no defects, and works exactly as advertised from day one without any glitches or failures. All of the OWC memory I've purchased over the years has lasted for the life of the iMac.
Aside from the price being a little high there is nothing more I could ask of the memory I bought, 48GBs in total makes the new iMac run great.I would recommend this item to a friend!
It's 'memory,' so it doesn't really lend itself to discussions on reliability or durability so much. Having said that, I did the research and far more knowledgable minds than mine concur that OWC's memory is first class in terms of being quality components.
What I can talk about is the huge impact this size memory kit has had on my computer's performance. Paired with the base 8 Gigs, I now have 40 Gigs of memory. My machine flies. Memory pressure is now non existent. Even when doing relatively complicated things in Photoshop with many layers, the cache stays empty. I now no longer have to shut down other apps when I want to use Lightroom, Photoshop or Capture One.
Also, I noticed that my CPU now runs near maximum when using said apps. At first I didn't understand this, but some more research shows that the extra memory headroom allows the CPU to function fully, or rather, to be fully utilised. The memory headroom allows it to bring to bear its full power on processes. I guess this is also part of what makes things seem so zippy now. It's not just that it can hold everything it needs in the memory, it can also 'think' better.
The speed of OWC's service was outstanding. My package arrived half way around the world at about the time I thought they would be just getting around to posting it. The staff must have gotten my order out the door really quickly. And also the answering of questions was fantastic too, I might add.
Anyway, for what it is worth, I am extremely satisfied with this purchase. I can clearly see a difference and I feel my machine has been 'enlivened.'I would recommend this item to a friend!