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4.0GB OWC Memory Upgrade

4.0GB PC8500 DDR3 ECC 1066MHz 240 Pin
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.
IMPORTANT OWC NOTE:
OWC p/n OWC8566D3MPE4GB 4GB modules require that all installed modules be of this same matching part. Other existing Apple or 3rd party 1GB, 2GB and 4GB modules are not supported for use with this kit and need to be removed when this kit is added.
*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 8-Core (Mid 2010)
(July, 2010)
Model ID: MacPro5,1
2.4GHz
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
Xserve Intel
Xserve 8-Core (Early 2009)
(April, 2009)
Model ID: Xserve3,1
2.26GHz, 2.66GHz, 2.93GHz
Xserve Intel
Xserve Quad-Core (Early 2009)
(April, 2009)
Model ID: Xserve3,1
2.26GHz
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.
PC Servers
PC Servers
Compatible with Intel / AMD Process based servers capable with the specifications listed above. Memory complies with JEDEC Specifications, document JESD79-3B.

Customer Ratings

Write a Review 5 / 5 1 out of 1 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: Anonymous Location: North Owned Product: 3-4 months
Rating: 5/5 Works. Fast delivery. Easy. November 9, 2014 not sure what to say, but OWC was helpful and speedy, no issues with anything I've every bought from them. It's memory. It worked well.

I would recommend this item to a friend! This review is from 16.0GB DDR3 ECC PC8500 1066MHz SDRAM ECC for Mac Pro & Xserve 'Nehalem' models.

Verified Buyer
Reviewer: Jiggy Location: Lisboa, Portugal Age: 25-34 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Mac Pro 2.66 Ghz Quad-Core Intel Xeon January 12, 2012 I had 3gb (3x1gb) on Mac Pro 2.66Ghz Quad-Core Intel Xeon (Nehalem) Now i get just one of this 8Gb and on Geekbench it makes less score but is more faster working. Don't care about Geekbench, because is more faster now with 1x8Gb. I notice more quickly working with all program's! Even the temperature of the CPU is lower! (less temperature = less rpm + less noise = durability) great's from Portugal!

I would recommend this item to a friend! This review is from 8.0GB DDR3 ECC-R PC8500 1066MHz SDRAM for Mac Pro & Xserve 'Nehalem' models.

OWC Memory 4.0GB 4.0GB PC8500 DDR3 Module Mfr P/N: 8566D3MPE4GB MacSales.com SKU: OWC8566D3MPE4GB OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day only $25.99
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