That said, I’d be more interested in a RAM configuration test done on the iMac 5k w/ M395X, as that takes VRAM out of the equation as a bottleneck (2 GB VRAM is hardly enough for a 5k display in any meaningful fashion.Īlso, the Diglloyd Huge test rather skews results here as its test files exceed most typical RAM configurations, and thus of course more RAM is going to greatly impact speed since at the maximum of 64 GB you’re encapsulating the entire swap file into RAM.
The lowest CPU offered in the iMac 5k is 3.2 GHz. See our teardown and unboxing of the new 27-inch iMac with Retina 5K display here: Īnd for our teardown and unboxing of the new 21.5-inch iMac with Retina 4K display, click here: /blog/33640-owc-tears-down-21-5-inch-imac-retina-4k-confirms-memory-is-soldered To get the best performance from your Mac, check out OWC’s complete selection of memory upgrades here: /shop/apple/memory/ As you can see, there are huge performance gains when adding more memory to the Late 2015 27-inch iMac with Retina 5K display. AMD Radeon R9 M390 with 2GB video memoryĬheck out the chart below to see what we found with different memory configurations (click image for larger version).8GB (two 4GB) memory, configurable up to 32GB.3.2GHz quad-core Intel Core i5 processor.
We ran a memory-intensive Diglloyd Photoshop Huge test with 8GB, 16GB, 24GB, 32GB, 48GB and 64GB OWC memory configurations in a 27-inch iMac with the following specs:
OWC now offers kits up to 64GB, utilizing modules of up to 16GB per slot for up to double the maximum memory offered via Apple factory options.Īnd now that we’ve had some additional time to put the new iMac through its paces, we wanted to share what we found when testing it with different memory configurations. Just hours after Apple announced its updated iMac lineup earlier this month, the Rocket Yard was able to confirm that the new Late 2015 27-inch Retina 5K model supports up to 64GB of memory via its MaxRAM certification program.
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