Adamanta16GB (2x8GB) Apple Memory Upgrade Compatible with Late 2015 iMac 27" Retina 5K Display DDR3/DDR3L 1867Mhz PC3L-14900 SODIMM 2Rx8 CL13 1.35v RAM DRAM

My late 2015 27" iMac fired right up and recognized the 32mb memory upgrade right away. Things are running much faster now, and I have no plans to replace my iMac for awhile since it's able to do everything I need.

If you need to add more ram to your iMac 27in Retina display late 2015, look no further.

I purchased this to compliment the existing memory in my late 2015 27" Retina iMac. The two 8GB DIMMs were packaged well and very easy to install. Going by the instructions, I took out the existing DIMMs and put these new ones in their place, and then re-installed the old ones in the remaining slots. I closed up my computer, reconnected the power and other cords, turned it on, and after a minute or two was back in business.Computer responsiveness is a subjective thing and difficult to quantify, but without reservation I can say that my iMac is noticeably faster with the new memory added, now totaling 32GB. It is most evident when working with Photoshop and other memory intensive software, but can be seen in the general system and it just feels overall a speedier computer. My only regret is that I waited so long to upgrade, but the price is now affordable so it was worth it.While power users like myself are only likely to notice significant improvements in system responsiveness for certain tasks, adding RAM to your computer is NEVER a bad thing if you can afford it. These Adamanta 16GB (2x8GB) Apple Memory Upgrade DIMMs are an upgrade I should have done years ago.~ Kort

Recently I began to feel like I was hitting an invisible barrier grinding my 2015 iMac to a gratingly slow crawl running Lightroom and Photoshop, reviewing and editing a mere handful of images. I tried to manage the problem by shutting down other apps and processes thinking to free up more memory for the tasks at hand. For a while this solution seemed sustainable until one night after a few hours of working on a single image Photoshop refused to save my image citing a lack of memory as the problem. I realized then that I’d been dragging out the inevitable and ordered these modules. There aren’t any blistering speed gains as I’d secretly hoped, but neither am I faced with the tedious routine of hunting for and shutting down apps and processes nor do I run into the problem of being unable to save my work.Easy to install. Works as expected.

Got the product quickly and was installed by my local Guru

My Mac came with the standard 8GB RAM, so I finally purchased this set to bump it up. They are quality made, easy to install, and give me the extra memory to better handle multiple applications simultaneously. Recommended.

I'm so grateful I found this RAM. I was very frustrated and thought there was something about my iMac that was frying my RAM modules, because I kept buying Crucial RAM and it would test okay, then fail and test bad after a while, time after time. I had to keep returning failing cards to Crucial until I decided to give this a try. After running in my iMac for over 1 year, it still tests fine.

Over all memory is memory period. I have used aftermarket memory in all my apple computers. It was simple to put into my Late 2015 iMac pop the cover off . I put the computer screen side down on my bed and placed the new memory in its slots simple as can be. Poped the cover on and right away the computer recognized the new memory. To test it out I opened all of my editing software Lightroom, photoshop, logic X and FCPX, and filled them with many images and video projects , as well as opened every thing in my dock and the computer did not even finch . At 32 Gb of memory I can edit video till my fingers fall off with out having to sacrifice the video I'm trying assemble . With every thing opened I edited a video and had not a problem at all. This memory rocks and did a great big change for my computer I finally got the performance I paid for in this computer . The Late 2015 iMac w i5 processor and fusion drive was maybe 33% faster with 8 GB of memory than my old late 2010 mac book pro with 8 gb of memory after the increase to 32 gb of memory i fell the computer is probably 150% faster than the mac book pro . A great thing is when I open a program I no longer have to wait 10-30 second for it to open it almost instantly opens now . In Photo editing I no longer get gittery performance in Light room when change levels on filters and sliders its smooth as silk almost to smooth. In video editing before as I filled a 2 min video with transitions and sound and effects the effects would stutter and transitions were not smooth the whole video before the memory increase would stutter when played back, now with full effects , and a ton of processing the video plays smoothly with out a hitch . I looked on my activity monitor when every thing was opened and memory pressure was only at 30% as compared to when I tried that with only 8 gb of memory I maxed it out to 100% and the computer would freeze and I would have to restart my computer. I am very pleased with this memory its does exactly what its made to do speed and smooth things out I finally got the computer was looking for when I purchased the iMac in the first place if you don't have sufficient memory or only the base 8gb the computer came with it will not fully perform to what its capable of . For 160 bucks its a cheap quick up grade to make your computer go from ok to sensational in minuets .

Funcionan muy bien, son fáciles de instalar.

The memory was easy to install and an immediate improvement in performance was noted.

Bien pensado vender las 4 memorias juntas para actualizar la imac. Ningún problema en la instalación, funciona de maravilla.

Perfecto empaque llego intacto, bien protegido y de fácil instalación, coincide perfecto con las características mencionadas para este producto y adecuado para mi Mac.

Muy buena compra, mi iMac está corriendo mucho mejor! Recomendado, además a gran precio (iMac fin 2015)