Upgrade the memory in your 27″ iMac with Retina 5K Display (Late 2015) with a model ID of iMac17,1 using the 32GB DDR3 1867 MHz SO-DIMM Memory Kit from OWC / Other World Computing. This memory kit features a total capacity of 32GB, which is made up of four 8GB modules. It also has a clock speed of 1867 MHz, a bus speed of PC3-14900, and a 204-pin SO-DIMM form factor. It operates using 1.35V, has a CAS Latency of CL=11, a cycle time of 1.875 ns, does not support ECC technology, and is not registered. Additionally, it is fully compliant with JEDEC specifications and is RoHS certified.
Please bear in mind that this RAM will only work with the Apple 27″ iMac with Retina 5K Display (Late 2015). These systems have a model ID of iMac17,1.
Jermaine Mosciski (verified owner) –
LOVE IT
Kari Yundt (verified owner) –
I didn’t read the reviews on BH before buying, I just went with Hey it’s an OWC product! Fantastic!… I was wrong. I don’t know what’s wrong with these memories but if you buy the 64GB kit you’ll be dealing with tons of restarts when you are trying to create smart previews or export a bunch of images on Lr.
Katelyn Doyle (verified owner) –
Improved Lightroom and Photoshop performance. Makes image processing easier.
Michelle Hoppe (verified owner) –
This RAM didn’t work in my brand new Retina 5K iMac. Got at least 5-6 kernel panics a day and numerous app crashes. Going to contact OWC and try another set but I may need to go down to 32 GB RAM.
Carlotta Turcotte (verified owner) –
I upgraded my iMac to 16GB and now it’s working without any crashes, It works absolutely great!!!
Jeremy Halvorson (verified owner) –
Instead of paying an astronomical amount of money for RAM when upgrading your iMac, buy this instead! Works perfect for iMac late 2015 edition!
Freddie Green (verified owner) –
Funcionan perfecto. F?cil instalaci??n
Joanny Olson (verified owner) –
Was very easy to install and has been working in my iMac
Myriam Upton (verified owner) –
A upgraded my RAM to resolve frequent freeze-ups. That workedperfectly.
Carey Wiza (verified owner) –
As good as OEM RAM. Nice addition to get a bit more power to avoid the spinning beach ball in Photoshop and Lightroom. Value for your dollar.
Triston Waters (verified owner) –
There is a 100% problem with OWC memory and I will explain why: 1. I purchased the my iMac and memory together from B&H, I used the iMac for 10 days without a glitch. 2. I installed OWC memory, and the computer started crushing. 3. I went ahead and decided it doesn’t worth troubleshooting, so just replaced the iMac from BH to a new iMac. 4. Same thing – run it for over 3 weeks with the original memory with no glitches – after installing OWC memory, crushing started again. 5. few days later, after updating my os, the computer wouldn’t even get back to life – so I had to get it serviced at the apple store (before doing that I replaced the memory back to apple’s genuine memory). 6. Apple confirmed there are no hardware issue to the iMac. 7. I re-run my iMac for another month with Apple’s memory – again 0 glitches. 8. Contacted OWC to get a replacement memory. 9. After installing the new memory received from OWC, problems started to rise again – takes longer to wake up from sleep, wifi doesn’t work after computer wake up (I have to disable and re-enable wifi). Not Recommended
Nestor Cummings (verified owner) –
Great for the price. Definitely saw a change in how fast windows and programs were opening and operating.
Marlee Quitzon (verified owner) –
Install was easy and performance improvement was VERY noticeable!
Jennie Zieme (verified owner) –
I ordered the product on February 22th. It was written that it would be delivered in a maximum of 15 days. but it reached me in 1.5 months. I could not get enough support from B&H in this process. It was a very bad shopping experience. I have never encountered such a disgrace before.
Bret Steuber (verified owner) –
My experience was the same asOrfischer’s. Purchased directly from OWC, as no 16G modules available @ B&H No problems prior to addition of 2x16G modules to the original 8G (as recommended on the OWC site), then, post installation, the system crashes frequently (every 1/2 hour or so). I’m not running any really intensive programs – Safari, Mail,& Photos (no post-processing) & it goes to Black screen, then message (your computer has re-started due to a problem)… Removed the OWC modules & NO problems subsequently. A very costly learning experience.
Madisen Rippin (verified owner) –
I installed an 8GB to 24GB upgrade in my iMac. The activity monitor immediately recognized and Photoshop adjusted its memory. I spent the rest of the day kicking myself for not doing it earlier. iMac makes the upgrade process relatively easy, but it took a couple of attempts to get the memory mounting just right. After raising the bar and then lowering it just a little (the one raised after getting the cover off), I was able to get a firm ‘snap’ sound that these were mounted correctly. After that, it booted up like normal. I wouldn’t think twice about this upgrade if you are still running on 8GB. The performance improvement is across the board. Chrome is carrying more cache, and Lightroom and Photoshop are now very responsive. I bought my machine in 2017 and had to manage my applications carefully to keep from keeping the machine from getting very sluggish. I was thinking about buying a new iMac. Now, I hope to get a few more years out of this one.
Fiona Beier (verified owner) –
These work just as well as the more expensive Apple Approved cards. Being able to upgrade from 8 to 32 g for around $200 dollars was amazing! Thanks, B&H!
Ricky Stanton (verified owner) –
Very easy install, chips work exactly as expected. More RAM = faster performance
Daren Botsford (verified owner) –
I put them in a Late 2015 iMac Retina 5K, replacing a 2 x 4GB Apple original kit, along with Crucial Ballistix Sport 16GB Kit (8GBx2), getting 32 GB of RAM. They work fine with no issue at all. Greate value.
Marcel Bins (verified owner) –
Great, easy instalation.