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16.0GB OWC Memory Upgrade Kit

Matched pair, perfect for the Mac Pro 8-core / Quad-core Xeon systems!
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 12-Core
(Mid 2010-2012)
(July, 2010 / June 2012)
Model ID: MacPro5,1
2.40GHz, 2.66GHz, 2.93GHz, 3.06GHz
Mac Pro
Mac Pro 8-Core (Mid 2010)
(July, 2010)
Model ID: MacPro5,1
2.4GHz
Mac Pro
Mac Pro 6-Core
(Mid 2010-2012)
(July, 2010 / June 2012)
Model ID: MacPro5,1
3.33GHz
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
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 5 / 5 6 out of 6 (100%) reviewers would recommend this product
1 2
Verified Buyer
Reviewer: DaveJ Location: Houston Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Make a monster out of your older Mac Pro March 31, 2017 Upgraded 2012 Mac Pro 12 Core to 128gb core memory for heavy editing with Final Cut Pro. What an improvement in performance. This 5 year old machine still outperforms most new computers on the market today. This upgrade along with a Nvidia Titan X with 12 gb ram video card cuts movie processing time down significantly.

I would recommend this item to a friend! This review is from 128.0GB (8x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models. Customer Videos:

Verified Buyer
Reviewer: Jetjock Location: Illinois Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Fast processing with lots of RAM March 16, 2017 I upgraded my 2009 Mac Pro to 32 Gb of RAM to handle large Photoshop file processing like panoramas. Installation was super easy and I've not a single memory hiccup since.

I would recommend this item to a friend! This review is from 8.0GB DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro & Xserve 'Nehalem' & 'Westmere' models. Customer Videos:

Verified Buyer
Reviewer: prandall Location: South Weymouth, MA Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Super Quality and Easy Installation February 16, 2017 These were of exceptional quality both in looks and function. I put them in, booted and my running out of memory ended in macOS Sierra. I've used the new memory for some time, now, without a hitch. I'll definitely be back for more upgrades.

I would recommend this item to a friend! This review is from 128.0GB (8x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models. Customer Videos:

Verified Buyer
Reviewer: RichInDC Location: Washington, DC Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 perfect February 1, 2017 No hassles popping these in.

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

Verified Buyer
Reviewer: DBailey Location: Perth, Western Australia Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Easy upgrade January 18, 2017 Very easy to install and an instant and noticeable speed increase on my MAC.

I would recommend this item to a friend! This review is from 48.0GB (3x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models. Customer Videos:

Verified Buyer
Reviewer: Fishman Location: Florida Age: 55-65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 OWC Mac Memory - outstanding! December 20, 2016 I purchased a new dual 6-core Mac Pro computer in mid-2012. from Apple ...the last of its kind. I immediately upgraded the memory to 48 GB. Recently, I upgraded again with OWC and purchased 5 more of these 16-GB memory modules to max-out my Mac Pro to 128 GB of RAM. Wow! It flies through processor/memory-intensive programs like nothing I have ever seen. OWC stands behind their products and I trust them implicitly. This memory is designed and manufactured to the strict Apple/Mac standards and works perfectly.

I would recommend this item to a friend! This review is from 48.0GB (3x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models. Customer Videos:

Verified Buyer
Reviewer: Peer
Rating: 5/5 Very easy to install November 8, 2016 Boot slowwr due the quantity of ram

I would recommend this item to a friend! This review is from 128.0GB (8x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Rochester New York Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 MacBook Pro memory at Max July 24, 2016 When I ordered my new MacBook Pro from Apple, I planned on immediately pulling the memory and putting in the maximum it would hold. This is the best cost-effective approach. I also pulled the 500 gig. HD and replaced it with a 1 TB making my MacBook Pro ready for editing high definition video. Very satisfied with the approach I took. You can learn how to do it I watching the videos on the OWC website.

This review is from 32.0GB (4x 8GB) DDR3 ECC PC3-10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: quebec,qc Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Way faster July 4, 2016 nice ram perfect

I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) DDR3 ECC PC3-10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: guywithzeisslens Location: Singapore Age: 18-24 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Reliable June 11, 2016 I would recommend this item to a friend! This review is from 48.0GB (3x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.
Verified Buyer
Reviewer: Anonymous Location: Serbia Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 4/5 Memory added April 1, 2016 Hi I want to share my impressions with you..

My Macpro 5.1 now updgraded with 24 GB OWC upgrade kit. Everything passing all tests smooth .Finnaly my loved Vienna Ensemble Pro and Protools can play a lot of Instruments and voices.

Thank you OWC. Next move will be your E2 PCIe SSD!

I would recommend this item to a friend! This review is from 24.0GB (6x 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: Paris, France
Rating: 5/5 Good priduct and exceptionnally good customer service March 30, 2016 My experience was buying this 24Gb RAM ugrade for my MP 5,1 6-core 3,33Ghz, which I had been looking forward for a long time (also highly upgraded the GPU last month). The product is as mentioned, was installed and works like a charm (although I believe I was already confortable with 12Gb of RAM, I noticed some RAM page outs lately using Photoshop CS 6 / Capture One / Firefox). Now what happened is that the package got stolen in my mailbox and that it was difficult for either service (OWC/Macsales and the French postal service) to assume responsability for this theft. Nevertheless, having proven my honesty in this situation, Macsales took it to them to send me another pack, at the one and only condition I accept DHL (and the customs fee, about 1/3 of the total price in the end, but still worth it). I must pay total respect to the quality of the customer service here which helped me from A to Z. Cheers ! And to those that order from EU for example, I strongly recommend using the trackable and person to person delivery exclusively. Too much theft in mailboxes in Paris these days !

I would recommend this item to a friend! This review is from 24.0GB (3x 8GB) DDR3 ECC PC3-10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: Paris, France Age: 45-54 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Extremely competent customer service and superb product March 29, 2016 Prior to purchasing, I had a live chat with a very competent service person who guided me through the intricacies of RAM selection for my MacPro 2010.

I wanted to max out the RAM and the advice I received helped me a lot to secure the correct memory reference for purchase.

Shipping to Europe was a mere matter of days and the RAM worked out of the box providing the announced performance.

I'm very satisfied with both the product and overall purchasing experience.

Definitely recommended to european customer who want competent input prior to issuing an order.

I would recommend this item to a friend! This review is from 48.0GB (3x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: Toronto Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Mac got new life January 9, 2016 upgraded to 16gb extra ram for my macpro tower & it just got new life !! so much faster than before , render videos in less time & speeds up multi-program tasks for me

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Age: 45-54 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 Excellent Upgrade...will be Getting Another 64G January 1, 2016 Fast shipping and no issues with the item. Very Satisfied!

I would recommend this item to a friend! This review is from 64.0GB (4x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: fdog Owned Product: 1-3 months
Rating: 4/5 A bit slower than I thought it would be November 12, 2015 But that could just be due to more memory being handled by my early 2009 Mac Pro than prior to switching to this.

Upgraded its single 2.66 GHz 4-core cpu to 3.46 GHz 6-core processor, and figured I'd take advantage of opportunity to use faster (1333MHz vs 1066Mhz it came with) memory allowed with the firmware update that basically turned the Mac Pro into the equivalent of a Mid 2010 model.

But nothing really changed, maybe just a teeny bit slower with the memory benchmarks. So either more memory made the small anticipated performance bump a wash, or perhaps the firmware update doesn't really take advantage of the faster memory speed after all with my hardware.

Regardless, if nothing else I now have more than twice the amount of memory I had before. The CPU bump has definitely perked things up, GUI behavior nice and smooth with Yosemite, though slightly better graphics card may also be helping with that. (Prior to all this, the early 2009 configuration I had was a bit sluggish overall and hesitated a bit here and there prior to doing some GUI activities. But no longer the case, mostly... getting Excel 2011 to do anything faster is apparently just never gonna happen.)

I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) DDR3 ECC PC3-10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: Laval, PQ Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Excellent September 13, 2015 Excellent , worked as expected, no issue what so ever, shipping was fast too.

PERFECT,

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: Montreal Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Extreme quality ! August 29, 2015 Everything was so well packed and it was : " Top quality " equipment. The shipping to Montreal was so fast. I ordered it Tuesday at 6:30 p.m.and received it Friday afternoon, around 4 p.m. With your new service, with Purolator, all the fees, border, taxes, etc.. are already paid, so it goes right to our door. I received it yesterday and installed it today. Everything seems to be fine.

I would recommend this item to a friend! This review is from 32.0GB (8x 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: London, England Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Take your Nehalem Mac Pro to the max June 29, 2015 Added this to an earlier OWC 64GB memory kit for my 2010 Mac Pro. Different part numbers but fully compatible. Perfect for a 12-core VM farm

I would recommend this item to a friend! This review is from 64.0GB (4x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: sydney, nova scotia canada Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 great products, great people June 29, 2015 i trust your brand, you are my first stop!

the guy who helped out with my RAM installation was kind and patient!

i will shop with you again!

thanks!

matthew

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Maryland Age: 45-54 Experience Level: Power User Owned Product: 3-4 months
Rating: 5/5 Works fine June 23, 2015 Easy install and upgrade. Memory works great in Mac Pro.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: Palo Alto Age: 45-54 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Updated a Mac Pro 5.1 mid 2010 June 4, 2015 The Ram was well packed, easy to install and worked perfectly since the first day

I would recommend this item to a friend! This review is from 48.0GB (3x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Owned Product: 1-3 months
Rating: 5/5 excellent so far May 3, 2015 I upgraded the memory in my dual-six Mac Pro and have had no problems with the memory for a couple of months now. Using all banks is supposed to be slightly slower than sets of three, but I have not noticed that. What I have noticed is that it is faster now that I can have more disk cache.

I would recommend this item to a friend! This review is from 64.0GB (8x 8GB) DDR3 ECC PC3-10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Owned Product: over 6 months
Rating: 5/5 worked flawlessly for 2 years May 3, 2015 I had this memory in my dual-six Mac Pro for two years and it worked flawlessly. I have replaced it with larger chips since I was starting to use up the 24G of ram.

I would recommend this item to a friend! This review is from 24.0GB (6x 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

Verified Buyer
Reviewer: Anonymous Location: Puerto Rico Age: 35-44 Experience Level: IT Professional Owned Product: 3-4 months
Rating: 5/5 BEST COMPANY IN THE MARCKET!!!!!!!!!!!! April 9, 2015 Worked Perfectly and reliable as always!!!!!!!!!!!!!!!!!!!!!!!! I had never had an issue!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models.

OWC Memory 16.0GB 2 x 8.0GB PC10600 DDR3 Module Mfr P/N: OWC1333D3W8M16K MacSales.com SKU: OWC1333D3W8M16K OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $99.98Matched Kit for $89.99
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