Upgrade the memory in your compatible system using the 64GB DDR4 2666 MHz SO-DIMM Memory Kit from OWC / Other World Computing. This memory kit features a capacity of 64GB, which comes in a configuration of 4 x 16GB, a clock speed of 2666 MHz (PC4-21300), a 260-pin SO-DIMM form factor, and operates using 1.2V, and has a CAS latency of 18. Additionally, this RAM is not buffered and does not support ECC technology. Adding more memory to your system will help boost its capabilities, including improving system performance and application responsiveness. Start-up times will be improved with fewer delays during routine operations, and more programs will be able to run simultaneously with easier switching between them. This memory is protected by a limited lifetime warranty.

64GB (4 x 16GB) Capacity    2666 MHz Clock Speed    PC4-21300    260-Pin SO-DIMM    1.2V    CAS Latency = 18    Unbuffered, Non-ECC

Model ID: iMac20,2

3.6 GHz Core i9, 3.8 GHz Core i7

Model ID: iMac20,1

3.6 GHz Core i9, 3.8 GHz Core i7, 3.3 GHz, 3.1 GHz Core i5

Model ID: iMac19,1

3.6 GHz Core i9, 3.7 GHz, 3.1 GHz, 3.0 GHz Core i5

Related Questions and Answers

Q: 1. Is this memory compatible with the Synology DS423? It is pops up as an accessory but not on the list.

A: Yes, the Synology 4GB DDR4 2666 MHz Non-ECC SO-DIMM Memory Module is compatible with the Synology DS423+.

Q: 2. Is this ECC?

A: It is not.

Q: 3. Is compatible with DS1621xs+?

A: Yes, the Synology 16GB DDR4 2666 MHz ECC SO-DIMM Memory Module BH #SYD4S266616G is compatible with the Synology DS1621XS+.

Q: 4. I purchased two of these, just wondering if upgrading the ram from 16 GB total to 32 GB total with two of these cards, what processes will it speed up? What will the added Ram benefit? Faster encoding speeds if all other items are ticked for processor, 10 Gbe ethernet, cat6, i7, and 10 Gbe switch? Just trying to make this work faster with two computers using media on it.

A: For this type of question, a phone consultation with our Pro Video Editing Department would be best. Please call 800-606-6969. Thank you.

Q: 5. Why are these so expensive given a 16GB ECC SO-DIMM module can be bought for half as much or less?

A: Synology RAM is specifically manufactured optimally for Synology devices and the workload this entails. This affects pricing as dictated by Synology.

Q: 6. Hello Can you please tell me please if I can upgrade my iMac Retina 5K 27-inch 2020, processor:(3.6 GHz 10-core intel i9), Memory: 16 GB 2667 MHz DDR4, and Graphic: Radeon Pro 5700 16 GB up to 64 Gb Ram with this product?

A: This RAM would be suitable for that computer.

Q: 7. Hello Can you please tell me please if I can upgrade my iMac Retina 5K 27-inch 2020, processor:(3.6 GHz i9), Memory: 16 GB 2667 MHz DDR4, and Graphic: Radeon Pro 5700 16 GB up to 64 Gb Ram with this product?

A: You could use this BH #OW2666D4S64S • MFR #OWC2666DDR4S64S with a 2020 27" iMac.

Q: 8. Is this RAM compatible with Dell Precision 7740 Mobile Workstation?

A: I pulled up the Dell specifications, and it appears that the OWC memory is compatible.

Q: 9. Is this 64GB(2x32gb) OWC ram single rank or dual rank?

A: This model is single rank.

Q: 10. I have Qnap TVS-H474. It comes with 8gig of ram. Can I add this board in the second memory slot for a total of 24 gigs? thanks!

A: Yes, you can add this QNAP 16GB DDR4 2666 MHz SO-DIMM Memory Module to the QNAP TVS-h474 for a total of 24GB of RAM.