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16.0GB OWC Memory Upgrade Kit

Memory Image
Product Specs:
OWC Memory for Mac Pro Quad Xeon fully meets Apple's specifications with special attention to proper thermal specifications.
Memory Trade in
Save money by trading in your original chips! View available memory rebates.
From the purchase date of qualifying memory from OWC, you have 60 days to trade-in your old memory for a cash rebate!
Just fill out OWC's online rebate form or contact OWC Customer Service after you receive and install your new memory.
*About the Apple Specified Thermal Sensor:
Ensuring maximum performance, reliability, and operational feedback -this DDR3 ECC Modules for the Apple Mac Pro 'Nehalem' 4 Core/8-Core and 'Westmere' 6-Core/8-Core processor models feature utilization of Apple qualified components including the inclusion of the Apple qualified Thermal Sensor EEPROM.
Please Note:
Memory modules may differ in appearance from those pictured.
This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
Mac Pro
Mac Pro 8-Core (Mid 2010)
(July, 2010)
Model ID: MacPro5,1
2.4GHz
Mac Pro
Mac Pro (Mid 2010 Quad-Core)
(July, 2010)
Model ID: MacPro5,1
2.8GHz, 3.2GHz, 3.33GHz
Mac Pro
Mac Pro (Early 2009 8-Core)
(March, 2009)
Model ID: MacPro4,1
2.26GHz, 2.66GHz, 2.93GHz
Mac Pro
Mac Pro (Early 2009 Quad-Core)
(March, 2009)
Model ID: MacPro4,1
2.66GHz, 2.93GHz, 3.33GHz
Xserve Intel
Xserve 8-Core (Early 2009)
(April, 2009)
Model ID: Xserve3,1
2.26GHz, 2.66GHz, 2.93GHz
Xserve Intel
Xserve Quad-Core (Early 2009)
(April, 2009)
Model ID: Xserve3,1
2.26GHz
PC Desktop
PC Desktops
Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.

Customer Ratings

Write a Review 4.8 / 5 13 out of 14 (93%) reviewers would recommend this product
Verified Buyer
Reviewer: OldSchool
Rating: 4/5 excellent August 19, 2016 my mac has never run faster, liked them so much i am buying another 4. great price and solid hardware.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Anonymous Location: Canada Age: 35-44 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 EXCELLENT. April 19, 2016 as described in ad. easy installation. no glitches.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Qatar Age: 25-34 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Affordable and quality RAM November 15, 2015 I am so happy with my order of the 16GB RAM for my MACBook PRO. It's increased the speed and extremely easy to install. Thank you.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Tucson, AZ Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Good investment in enhanced performance July 28, 2015 Installed these in my 2009 Mac Pro along with a new SSD and immediately noticed an overall increase in speed and performance. Working in Photoshop and Final Cut Pro is much more enjoyable and a lot less time waiting for operations to complete. Quality RAM which I have come to depend upon from OWC. Use these modules in several computers and the reliability is excellent. Whenever I buy a new Mac, I usually double the stock RAM at a fraction of the price from the OEM.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Johannesburg, South Africa Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Works perfectly on a 2009 Mac Pro 8 core May 19, 2015 I live in South Africa & was struggling to find memory for my 2009 Mac Pro 8 core machine until I discovered OWC. They shipped the memory to me within a week & everything works perfectly! Thanks guys!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: DC Age: 55-65 Experience Level: IT Professional
Rating: 5/5 Flawless buyer experience January 27, 2015 Memory chips are not exactly feature rich enough to write a review about but OWS certainly is. This was an effortless experience from beginning to end and benefited from OWS long track record for customer-centric service.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Seattle, WA Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Good products; good company December 15, 2014 Been doing business with OWC for many years and they always deliver a good product for a good price, and usually a lot quicker than the initial delivery estimate. What can you say about memory, though? Plugged it in it showed up on the System configuration, and it works. Sent my original memory back for a rebate, and got that check in good time, too.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Israel Age: 25-34 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 2 Years late with the review :) But hey... two years of testing! GREAT RESULTS! November 12, 2014 Hehehe I've just purchased another item on OWC... and saw that I have't review this one...

So after two years of music production and mixing... and I mean intensive work... I have only great things to say about this memory! just great! great price! great performance! (would have wrote much more, but I'm currently at the studio... so, you know... I'm busy)... :)

Highly recommended for everyone that seeking to upgrade his Mac Pro's memory!

Kind Regards, Radion.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Etowah, NC Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 16 gig of stellar memory! September 4, 2014 Talk about an easy upgrade for my 2009 Mac Pro! What a performance bump and so simple to do. OWC provides great videos to walk you thru the process. Everything works perfectly.

As soon as I save up enough, I've got to get one of OWC's SSD's for my main drive!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 4/5 Last Hurrah for an Aging Mac Pro July 16, 2014 This purchase was the last upgrade I plan to do with a 2010 Mac Pro. This kit would double the amount of RAM and I admit it's noticeable if not awe-inspiring. I had just placed an SSD into a 2011 MacBook Pro (whose RAM was already maxed) and since I used both I needed to upgrade the Pro so the switch back and forth wouldn't be so jarring. There's no real comparison between the two machines but I did find some applications ran better/faster with the additional/newer RAM.

OWC's kits are easy replacements for your hardware, no need to guess, pick and choose on other sites. That's quite a selling point in itself. RAM is an easy upgrade to do oneself (in these now aging machines) and one of the best ways to extend the life of a machine. If not in the market for a new computer this is the best thing to do with the one you have.

Verified Buyer
Reviewer: Anonymous Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Product delivered expected performance January 4, 2014 I would recommend this item to a friend!
Verified Buyer
Reviewer: Snowman45 Location: Houston Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Sped Up the Lion May 21, 2012 My Mac Pro 4,1 came with 8GB of ram, and when I downloaded Lion OS then everything started running slower. Especially GarageBand, and I use the computer for my home recording studio. Ordered this memory set from OWC and was please with the pricing, video install instructions, & quick delivery, but very pleased with the increase in speed that the added memory gave me.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Bino Location: Los Angeles Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Will keep buying from OWC! November 17, 2011 16 GB RAM was only my latest purchase from OWC Mac Sales. I have never had to use the tech support - I suppose mainly cuz everything I have bought from this company just WORKS!!. And, I have always received the merchandise when promised. My new Protools 10 is hungry for RAM and I willl "feed it" with OWC products. These guys understand the MAC user. Plain and simple.

Thanks OWC.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Video422 Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Good Deal! May 24, 2011 Picked up 4 x 4GB chips to add to the 8GB I already had in my Mac Pro (early 2009 Nehalem). I can now preview a full 30 second in 1080p in After Effects CS5. After Effects also starts very fast now. I live in Canada and there wasn't a problem with shipping from the US, came right to my door.

I would recommend this item to a friend!

OWC Memory 16.0GB 4 x 4.0GB PC8500 DDR3 Kit Mfr P/N: 85MP3W4M16GK OWC SKU: OWC85MP3W4M16GK OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $95.52Matched Kit for $79.88
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