OWC Memory Upgrade Kit PC4-21300 DDR4 ECC-R 2666MHz LRDIMMs for iMac Pro

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£179.17 (Ex. VAT)
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OWC 2666MHz DDR4 RDIMM PC4-21300 288-Pin CL19 Memory Upgrade Kit for iMac Pro (2017). Includes screen adhesive.

**Requires Professional Installation**The iMac Pro DOES NOT feature a memory door on the back allowing for easy upgrades. Upgrading the iMac Pro's memory requires dismantling the computer to gain access to the memory slots. This is a highly complex process that requires a skilled technician. Watch the video guide.

Improve System Speed
OWC Memory is the most cost effective and simple DIY upgrade you can install to unleash your Mac's full potential and speed up overall responsiveness.

More Apps. More Files
Become a multi-tasking maven when you upgrade your Mac with OWC Memory. Open more apps. Open larger files. Plus, work with multiple files all at the same time.

Save £££ vs Factory
Save BIG vs factory Mac memory options. Plus, select among options not offered by the factory. OWC makes it easy to find the perfect upgrade to fit your needs.

Lab Tested Compatibility
We test every OWC memory module at our in-house lab so you can upgrade with the confidence that your memory is 100% compatible with your Mac.

Lifetime Warranty
We build OWC Memory upgrades to meet or exceed Apple's specs and provide years of worry-free service.

Step-by-Step Videos
Our detailed install videos guide your upgrade from start to finish. We provide all the steps to make your OWC Memory upgrade DIY easy.

OWC 2666MHZ DDR4 RDIMM PC4-21300 (choose from options)
(1) 27" iMac Adhesive tape set for proper display resealing

Technology DDR4 RDIMM 288 Pin

4 x 16GB/  4 x 32GB/  2 x 64GB/  4 x 64GB/  4 x 128GB/  3 x 128GB

RoHS Yes
Pin Count 288-pin
Op. Temp 0C to +85C
Data Rate DDR4-2666 V-R 
Speed PC4-21300
Timing CL 19
Voltage 1.2
IMPORTANT NOTE iMac Pro can use either RDIMM or LRDIMM, but they cannot be combined. Additionally, LRDIMM modules must all be of the same size.


iMac Pro (27-inch Late 2017) (December 2017) Model ID: iMacPro1,1 - A1862 - EMC 3144 | 3.2GHz 8-core, 3.0GHz 10-core, 2.3GHz 14-core, 2.5GHz 18-core