48.0GB OWC Memory Upgrade Kit
3 x 16.0GB PC10600 DDR3 ECC 1333MHz 240 Pin
Matched pair, perfect for the Mac Pro 8-core / Quad-core Xeon systems!
Product Specs:
OWC Memory for Mac Pro Quad Xeon fully meets Apple's specifications with special attention to proper thermal specifications.
IMPORTANT OWC NOTE:
OWC p/n OWC1333D3MPE8GB (8GB modules) and OWC1333D3MPE16G (16GB modules) require that all installed modules be of the same p/n OWC 8GB and/or 16GB modules. Other existing Apple or 3rd party 1GB, 2GB and 4GB modules are not supported for use with these kits and need to be removed when these modules are added.
To utilize over 32GB of memory in your Mac Pro using 10.6.x or greater, you must boot into 64 bit mode. In 32 bit mode, all installed memory will show in system profiler but only up to 32GB will be actively used by the computer.
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 - all OWC DDR3 ECC Modules for the Apple Mac Pro 'Nehalem' process 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.
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 8-Core (Mid 2010)
(July, 2010)
Model ID: MacPro5,1
2.4GHz
Mac Pro 6-Core
(Mid 2010-2012)
(July, 2010 / June 2012)
Model ID: MacPro5,1
3.33GHz
Mac Pro (Mid 2010 Quad-Core)
(July, 2010)
Model ID: MacPro5,1
2.8GHz, 3.2GHz, 3.33GHz
Mac Pro (Early 2009 8-Core)
(March, 2009)
Model ID: MacPro4,1
2.26GHz, 2.66GHz, 2.93GHz
Mac Pro (Early 2009 Quad-Core)
(March, 2009)
Model ID: MacPro4,1
2.66GHz, 2.93GHz, 3.33GHz
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
Verified Buyer
Reviewer: bitnaut
Location: Vancouver, Canada
Age: 45-54
Experience Level: Power User
Owned Product: less than a month
Rating: 5/5
Works great!
October 22, 2018
Works great in my Mac Pro 5,1...no errors like I was getting with the last memory sticks I bought from a competitor.
Thanks OWC!
I would recommend this item to a friend!
Customer Videos:
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: 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: 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! This review is from 8.0GB DDR3 ECC PC10600 1333MHz SDRAM ECC for Mac Pro & Xserve 'Nehalem' & 'Westmere' models.
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: 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! 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: 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!
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!
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: 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!
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.
