Quality Solutions. Expert Support. Since 1988.

MacSales.com Logo

128.0GB OWC Memory Upgrade Kit

Matched Memory, perfect for the Mac Pro 8-core Xeon systems!
Memory Image
Product Specs:
OWC Memory for Mac Pro 8-core Xeon fully meets Apple's specifications with special attention to proper thermal specifications.
IMPORTANT OWC NOTE:
OS X versions prior to 10.9 Mavericks are unable to utilize more then 96GB RAM due to an operating system limitation. 128GB can be fully utilized by a 2009-2012 Mac Pro if running OS X 10.9 Mavericks or later, or if running Bootcamp with 64-bit versions of Windows XP and later, as well as with 64-bit versions of Linux.

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.
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 - 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.
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 (Early 2009 8-Core)
(March, 2009)
Model ID: MacPro4,1
2.26GHz, 2.66GHz, 2.93GHz
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.
Current Mac OS X versions are unable to utilize more then 96GB RAM due to an operating system limitation. 128GB can be fully utilized by a 2009-2010 Mac Pro if running Bootcamp with 64-bit versions of Windows XP and later as well as with 64-bit versions of Linux.

Customer Ratings

Write a Review 5 / 5 3 out of 3 (100%) reviewers would recommend this product
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! 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! 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! Customer Videos:

OWC Memory 128.0GB 8 x 16.0GB PC10600 DDR3 Module Mfr P/N: 1333D3X9M128 MacSales.com SKU: OWC1333D3X9M128 OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $799.76Matched Kit for $699.99
Add to CartOther World Computing 1333D3X9M128 In Stock, Click to Buy Now