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OWC 16GB DDR4 2666 MHz SO-DIMM Memory Upgrade (2 x 8GB)

BH #OW2666D4S16P • MFR #OWC2666DDR4S16P
 169 reviews
OWC 16GB DDR4 2666 MHz SO-DIMM Memory Upgrade (2 x 8GB)
Key Features
  • 16GB (2 x 8GB) Capacity
  • 2666 MHz Clock Speed
  • PC4-21300
  • 260-Pin SO-DIMM
Boost the memory capacity of your supported Mac or Windows PC with the 16GB DDR4 2666 MHz SO-DIMM Memory Upgrade from OWC. Compatible with 260-pin SO-DIMM slots, this 16GB DDR4 memory upgrade comes in two 8GB modules and has a 2666 MHz clock speed, a bus speed of PC4-21300, and a low-noise, 8-layer PCB design. Operating at 1.2V, this memory upgrade is designed to meet or exceed Apple's and Intel's specifications.
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$39.99
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OWC DDR4 2666 MHz SO-DIMM Overview

Boost the memory capacity of your supported Mac or Windows PC with the 16GB DDR4 2666 MHz SO-DIMM Memory Upgrade from OWC. Compatible with 260-pin SO-DIMM slots, this 16GB DDR4 memory upgrade comes in two 8GB modules and has a 2666 MHz clock speed, a bus speed of PC4-21300, and a low-noise, 8-layer PCB design. Operating at 1.2V, this memory upgrade is designed to meet or exceed Apple's and Intel's specifications.

Compatibility
iMac with Retina 5K display (27", August 2020)
iMac with Retina 5K display (27", March 2019)
Mac mini (November 2018)
Select Intel and AMD processor-based PCs
UPC: 810586031356

OWC DDR4 2666 MHz SO-DIMM Specs

Capacity
16 GB
Kit Configuration
2 x 8 GB
Speed
PC4-21300 (2666 MHz)
Memory Type
DDR4
DIMM Type
260-Pin SO-DIMM
Voltage
1.2 V
Heat Spreader
No
Built-in LED
None
Packaging Info
Package Weight
0.095 lb
Box Dimensions (LxWxH)
6.95 x 4.95 x 0.55"

OWC DDR4 2666 MHz SO-DIMM Reviews

Excellent service

By Lester
Rated 5 out of 5
Date: 2023-04-19

I received my purchase sooner than I thought I would. Thank you. You squeezed me in right before Passover!

OWC is the best...

By Richard
Rated 5 out of 5
Date: 2022-12-18

Been using OWC RAM in my Mac's since the Apple G5... solid and reliable...

failed, and lifetime warranty not honored

By Krzysztof
Rated 1 out of 5
Date: 2022-12-11

not reliable. this is the first time any ram chip failed on me in almost 4 decades of upgrading and building computers. owc tactics for warranty is to require invoice details and to require personal info to create account with them. it's a way to make obtaining service too difficult for customer. lifetime warranty means it doesn't matter when or where I bought it, or who I am.

seeing owc was the sale for me

By Ed
Rated 5 out of 5
Date: 2022-11-20

I am a relatively new customer; got the Payboo card, purchased some needed owc stuff, I'm a satisfied customer. I look forward to many future purchases.

Good RAM

By Bruno
Rated 5 out of 5
Date: 2022-10-25

Bought these to upgrade my new Imac 27 because the ones I've been using on my other Imac are working fine. Blazing fast. Easily installed myself.

Just as it should be

By Kent
Rated 5 out of 5
Date: 2022-08-29

Seldom do I need assistance from the team at B&H. This time, upgrading the memory on my MAC, I became a bit nervous so I called. Minutes later I had the advice I needed. I was actually talked down from spending too much for the needs I have. I am now upgraded and screaming ahead with my work. Thanks,

Best and Easiest!

By Lorena
Rated 5 out of 5
Date: 2023-01-30

It is so easy to upgrade memory in an Apple product. I upgraded my memory from 4GB in two slots to 16GB in two slots. It took 10 minutes. I am not a techie, but I can follow directions. I never pay high prices for upgraded memory, OWC products are 75% less costly than the name brand and performance is excellent.

New life for my iMac

By Michael
Rated 5 out of 5
Date: 2022-12-19

Super happy with these, went in and perform along side the factory originals perfectly.

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YOUR RECENTLY VIEWED ITEMS

Is this compatible with iMac (Retina 5K, 27-inch, ...

Is this compatible with iMac (Retina 5K, 27-inch, 2017)?
Asked by: Eduardo
If you are able to physically access the chip bay in your model, this chip model will be compatible.
Answered by: Michael
Date published: 2020-12-19

Is it the same 64 gb kit that can be used in the ...

Is it the same 64 gb kit that can be used in the 2018 Mac mini?
Asked by: Tom
This memory is compatible with the Late 2018 Mac mini. The link that you provide is for 2 X 32GB sticks, the community answer is not correct.
Answered by: OWC Andy
Date published: 2020-04-03

Will this work for the new 2019 iMac 27" base ...

Will this work for the new 2019 iMac 27" base model?
Asked by: Sian
Is there any difference between PC4-21333 and PC4-21300 and 2666MHz and 2667MHZ ? 27 inch mac come up with PC4-21333 and 2666MHz I don’t understand how’s going to be same like that?
Answered by: Zayn
Date published: 2022-12-25

Hello, Does B&H offer installation services for ...

Hello, Does B&H offer installation services for mac mini memory upgrade? is B&H an Apple Authorized Service Provider?
Asked by: Eric
We do not offer RAM installation on the Mac Mini, only for the iMac which is a much simpler procedure.
Answered by: Miguel
Date published: 2020-09-29

Hi, is this compatible with Imac 27' 19.1 2019 ...

Hi, is this compatible with Imac 27' 19.1 2019 with radeon pro 570x 4gb ?
Asked by: farid
Yes, it is compatible with the 19,1.
Answered by: OWC Andy
Date published: 2021-02-08

Is it compatible for Synology DS1621xs+ ?

Is it compatible for Synology DS1621xs+ ?
Asked by: Bagavathikan
No, this OWC 32GB DDR4 2666 MHz SO-DIMM Memory Upgrade (2 x 16GB) would not be compatible with the Synology DS1621xs+.
Answered by: Moe
Date published: 2022-02-11

Can I add a 32G to an iMac27 - Can I use this 32G ...

Can I add a 32G to an iMac27 - Can I use this 32G without removing the original 16G memories in the new (2020) iMac 27? Will the two kinds work?
Asked by: Marina
Yes, it will work fine.
Answered by: OWC Andy
Date published: 2020-12-08

Will this memory work with Dell XPS 15 7590? ...

Will this memory work with Dell XPS 15 7590? Would like to put these 2 32 GB in to get 64 GB
Asked by: Douglas
From the specifications that I can find, it does appear that this kit should work in the Dell.
Answered by: OWC Andy
Date published: 2020-02-10
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