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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.
OWC is proud to offer the best possible Mac Pro Memory solutions available.
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Pictured above: Proper Apple Qualified heat-spreaders.
See the difference between
Apple's qualified modules and those that are not!
Premium Quality Modules fully Mac Pro Qualified and backed by OWC Memory Lifetime Limited Warranty including Advanced Replacement Program.

These OWC memory modules fully meet/exceed Apple's Mac Pro Quad & 8-Core Xeon model memory specifications. Utilization of qualified Apple Mac Pro Heat-Spreaders, Apple Qualified IDT AMBs, and the best major brand memory components ensure maximum performance and trouble-free operation. Modules are fully tested prior to shipment.


Apple specifically designed the Mac Pro with more space between each slot to accommodate the Apple Proprietary Heat-Spreader for thermal requirements. Use of Apple's spreader solution and the highest grade, thermally tolerant components ensure that these Mac Pro Quad Xeon Memory Upgrade Kits will provide a lifetime of reliable and trouble-free operation.

Apple notes that using parts with a non-Apple standard heat-spreader and which only meet JEDEC standard specifications can result in higher fan speeds due to increased internal temperatures and system controlled reduction of memory performance to prevent thermal overload. OWC's testing has found that use of non Apple qualified spec modules leads to ECC errors and ultimate system lock ups as non-spec modules reach significantly higher temperatures.

Two well known memory manufacturers originally listed their own JEDEC standard modules as being Mac Pro compatible. Within days of doing so, each removed this compatibility support after reports and testing which made clear JEDEC standard modules were not reliable in the Mac Pro. It is very disappointing that many other memory providers continue to list and misrepresent such JEDEC modules (lacking the proper heat-spreader) as being correct for the Mac Pro.

The Apple Mac Pro is an amazing machine. Memory from OWC only makes it better!
This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
Mac Pro
Mac Pro (8-core)
(April, 2007)
Model ID: MacPro2,1
3.0GHz
Mac Pro
Mac Pro
(August, 2006)
Model ID: MacPro1,1
2.0GHz, 2.66GHz, 3.0GHz

Customer Ratings

Write a Review 5 / 5 7 out of 8 (88%) reviewers would recommend this product
Verified Buyer
Reviewer: Anonymous Location: Toronto, Ontario Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Very satisfied February 4, 2016 I am pleased with the product. High quality. The price was great too. Especially impressive was the speed of shipping to Toronto Canada. I've ordered at least twice since then and the results were the same.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Chicago suburbs Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Carefully packaged, easy to install February 1, 2016 Very happy with the quality of the memory for my upgrade. It arrived promplty, packaged well, and was easy to install with the directions given on the website.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 Popped right in and worked perfectly September 7, 2015 Would recommend these sticks to fellow owners of 2006 1st Gen Mac Pro's.

Now I'm running happy with 20GB. Youtube HD videos no longer stutter, and Netflix plays smoothly!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Chicago Age: 45-54 Experience Level: Power User Owned Product: 5-6 months
Rating: 5/5 Excellent memory July 1, 2015 I've had these sticks for awhile and they are awesome! Price was great too.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous
Rating: 5/5 Excellent as usual from OWC November 11, 2014 Product arrived as expected,install was simple and easy and everything works perfect thanks owc.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Dubai Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Amazing Product October 24, 2014 Grade "A" quality product, value for money and shipping was blazing fast.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Hong Kong Age: Over 65 Experience Level: Hobbiest Owned Product: over 6 months
Rating: 5/5 This product has great features February 26, 2014 One can find faster memory for old computers: unfortunately too expensive.

I would recommend this item to a friend!

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Atlanta Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 worked perfectly. March 20, 2013 easy install and great speed boost

OWC Memory 16.0GB 4 x 4.0GB Kit PC5300 DDR2 Mfr P/N: OWC53FB4MPK16GB OWC SKU: OWC53FB4MPK16GB OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day Only $179.96Matched Kit for $149.99
Add to CartOther World Computing OWC53FB4MPK16GB In Stock, Click to Buy Now