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8.0GB OWC Memory Upgrade

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 5 out of 6 (83%) reviewers would recommend this product
1 2 3
Verified Buyer Top 100 Contributor
Reviewer: LWB250 Location: Florida Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 The OWC Garage Sale ROCKS! September 29, 2018 Bought this RAM with a Mac Pro 4,1 that will eventually get a Westmere processor that will allow it to use faster RAM. While I was a little bummed that there wasn't an even number of sticks available, getting the two I did buy at such a great price made it an easy decision to buy.

I've used OWC RAM for years, as I know that it will ALWAYS work in my Macs. Sure, it can be more expensive than the junk that you find elsewhere, but knowing that it's guaranteed for life and that it's tested and guaranteed to work in my Macs makes it all worthwhile.

Thanks a bunch, OWC! I'll be watching for more of this in future Garage Sales!

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

Verified Buyer
Reviewer: IBuyStuff Location: Central Iowa Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Perfect performance September 19, 2018 I plugged it in, and away we went! 32GB of nice, speedy RAM to make me forget about a new machine for another couple years...

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. Customer Videos:

Verified Buyer
Reviewer: DroiddProductions Location: Toronto, Canada Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Mac Pro 5.1 Phoenix! September 11, 2018 This ram kit took my mid 2010 Mac Pro from being an obsolete paper wieght into 2018. I need to mention that I also upgraded my dual processors to Xeon x5690’s at 3.46ghz and threw in a 500gb ssd for the boot volume. These inexpensive upgrades saved me thousands of dollars. My machine is insanely fast now. Thank you OWC for providing quality products at great prices. You are my go to site for Mac hardware.

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: MrDennis Location: Los Angeles Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 64GBs August 6, 2018 It's What you need if your trying to breath NEW LIFE into your Mac Pro. Helps to get you up and running smoothly. Thanks OWC......

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. Customer Videos:

Verified Buyer
Reviewer: Thijs Location: the Netherlands Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Great July 18, 2018 Works very well. Upgraded from 16gb 1066mhz. My 2009 MacPro 4.1 to 5.1 6 core 3.46 ghz works super fast and stable. 3 Dimms is the fastest setup.

High Sierra 10.13.6 (17G65) Boot-ROM-version: MP51.0089.B00

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. Customer Videos:

Verified Buyer
Reviewer: OJFL
Rating: 5/5 Kit well built June 6, 2018 This kit is very well built and very easy to install. The packaging is excellent.

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: 1element Location: Mamteca., Ca Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Added another 8GB to bring it up to 32GB March 27, 2018 Previously had 24GB of memory in my 2010 Mac Pro 6 core. This brought me up as I do a lot of Photoshop work with large files.

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

Verified Buyer
Reviewer: Carls708 Location: Louisiana Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Worked perfectly! March 25, 2018 The Mac Pro was sluggish working with large image files, and the increased memory solved the problem. We went from 12 to 96 gigabytes, and the performance increase was dramatic. The memory upgrade actually arrive a day early, which we appreciated.

I would recommend this item to a friend! This review is from 96.0GB (6x 16GB) DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models. Customer Videos:

Verified Buyer
Reviewer: Unixjedi Location: Trophy Club,TX Age: 45-54 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 no issues, it memory December 4, 2017 Not real hip on doing reviews on mundane items. OWC memory has always been good and good value. Never had a fault. Apple will always give the "need to be Apple Memory" line but OWC is fine and is same or better.

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. Customer Videos:

Verified Buyer
Reviewer: ADC12345 Location: DC Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Top Notch Ram November 16, 2017 This additional RAM breathed life into my older MAC Pro. Awesome!

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. Customer Videos:

Verified Buyer
Reviewer: Saeedphoto Location: Dubai Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Big deal June 27, 2017 128 GB is a big deal, I used to have 64 GB memory from Samsung which was great but after installing 128GB my computer runs photoshop and lightroom much faster and almost everything is noticeably faster.

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: JFNJ123 Location: Montclair, NJ Age: 45-54 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 works perfectly! Great for running multiple VMs June 12, 2017 I am a software engineer running primarily windows (!!) on my 2010 5,1 Mac Pro. I do all of my development in windows under VMware Fusion, running multiple VMs hosting custom application software along with Oracle server. I prefer to host the virtual machines under Mac OS, as the "housekeeping" is so much easier - backups, email, encryption, and so on. I recently bought a 12-core processor tray for my Mac Pro just so that I could have a higher memory maximum - my old Mac Pro had 6 cores and maxed out at 48Gb. I bought the 128Gb memory upgrade and it's quite a luxury to have so much memory available to run multiple virtual machines. The 8 memory boards arrived, and I installed them onto the processor tray. No issues - they just worked.

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: 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! 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! This review is from 16.0GB (2x 8GB) DDR3 ECC PC3-10600 1333MHz SDRAM ECC for Mac Pro 'Nehalem' & 'Westmere' models. 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.

OWC Memory 8.0GB 8.0GB PC10600 DDR3 Module Mfr P/N: 1333D3ECC8GB OWC SKU: OWC1333D3ECC8GB OWC Memory Upgrade Module Lifetime OWC Limited Warranty Ships: Same Day only $49.99
Add to CartOther World Computing 1333D3ECC8GB In Stock, Click to Buy Now
Additional Capacities & Kits: 1 x Module (Single)
  • 2GB
    • Ships: Same Day
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    • $14.99
  • 4GB
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    • $26.99
  • 8GB
2 x Module Kits
  • 4GB (2x2GB)
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    • Matched Kit for $29.97
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    • Matched Kit for $47.99
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    • Matched Kit for $89.99
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    • Matched Kit for $179.00
3 x Module Kits
  • 6GB (3x2GB)
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    • Matched Kit for $44.95
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    • Matched Kit for $69.99
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4 x Module Kits 6 x Module Kits
  • 12GB (6x2GB)
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    • Matched Kit for $84.99
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    • Matched Kit for $135.99
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    • Matched Kit for $264.99
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    • Matched Kit for $495.00
8 x Module Kits
  • 16GB (8x2GB)
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    • Matched Kit for $114.99
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