Get exclusive deals delivered to your inbox!

Start saving today. »
Product Specs:
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.
This OWC Memory is compatible with... Learn how to find your Mac's model ID or PC specs
MacBook White Unibody
MacBook (Mid 2010)
(May, 2010)
Model ID: MacBook7,1
2.4GHz
MacBook White Unibody
MacBook (Late 2009)
(October, 2009)
Model ID: MacBook6,1
2.26Ghz
MacBook Unibody
MacBook (Late 2008)
(October, 2008)
Model ID: MacBook5,1
2.0GHz, 2.4GHz
MacBook Pro Unibody
MacBook Pro (17-inch Mid 2010)
(April, 2010)
Model ID: MacBookPro6,1
2.53GHz, 2.66GHz, 2.8GHz
MacBook Pro Unibody
MacBook Pro (17-inch Mid 2009)
(June, 2009)
Model ID: MacBookPro5,2
2.8GHz, 3.06GHz
MacBook Pro Unibody
MacBook Pro (17-inch Early 2009)
(January, 2009)
Model ID: MacBookPro5,2
2.66GHz, 2.93GHz
MacBook Pro Unibody
MacBook Pro (15-inch Mid 2010)
(April, 2010)
Model ID: MacBookPro6,2
2.4GHz, 2.53GHz, 2.66GHz, 2.8GHz
MacBook Pro Unibody
MacBook Pro (15-inch Mid 2009)
(June, 2009)
Model ID: MacBookPro5,4
2.53GHz
MacBook Pro Unibody
MacBook Pro (15-inch Mid 2009)
(June, 2009)
Model ID: MacBookPro5,3
2.66GHz, 2.8GHz, 3.06GHz
MacBook Pro Unibody
MacBook Pro (15-inch Early 2009)
(March, 2009)
Model ID: MacBookPro5,1
2.66GHz 2.93GHz
MacBook Pro Unibody
MacBook Pro (15-inch Late 2008)
(October, 2008)
Model ID: MacBookPro5,1
2.4GHz, 2.53GHz, 2.66GHz 2.8GHz
MacBook Pro Unibody
MacBook Pro (13-inch Mid 2010)
(April, 2010)
Model ID: MacBookPro7,1
2.4GHz, 2.66GHz
MacBook Pro Unibody
MacBook Pro (13-inch Mid 2009)
(June, 2009)
Model ID: MacBookPro5,5
2.26GHz, 2.53GHz
iMac Intel
iMac (27-inch Late 2009)
(October, 2009)
Model ID: iMac10,1; iMac11,1
2.66GHz, 2.8GHz, 3.06GHz, 3.33GHz
iMac Intel
iMac (24-inch Early 2009)
(March, 2009)
Model ID: iMac9,1
2.66GHz, 2.93GHz, 3.06GHz
iMac Intel
iMac (21.5-inch Late 2009)
(October, 2009)
Model ID: iMac10,1
3.06GHz, 3.33GHz
iMac Intel
iMac (20-inch Early 2009)
(March, 2009)
Model ID: iMac9,1
2.66GHz
Mac mini Intel
Mac mini (Mid 2010)
(June, 2010)
Model ID: Macmini4,1
2.4GHz, 2.66GHz
Mac mini Intel
Mac mini (Mid 2010 Server)
(June, 2010)
Model ID: Macmini4,1
2.66GHz
Mac mini Intel
Mac mini (Late 2009)
(October, 2009)
Model ID: Macmini3,1
2.26GHz, 2.53GHz, 2.66GHz
Mac mini Intel
Mac mini (Late 2009 Server)
(October, 2009)
Model ID: Macmini3,1
2.53GHz
Mac mini Intel
Mac mini (Early 2009)
(March, 2009)
Model ID: Macmini3,1
2.0GHz, 2.26GHz
PC Laptop
PC Laptops
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 5 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: kwnz Location: New Zealand Age: Over 65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Very reliable product February 8, 2018 Excellent ram module, Great professional company Thanks.

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

Verified Buyer
Reviewer: 2010Imac Location: West Virginia Age: 25-34 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Over 3 years in service used daily September 20, 2017 Works great

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

Verified Buyer
Reviewer: Anonymous Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 2x4GB PC-8500 DDR# Memory Modules May 12, 2016 I increased my IMac's memory from 4GB to a total of 8GB. The two new modules from OWC worked perfectly. They were shipped to me in just a few days and the price was right. I'm thinking of increasing the memory up to 16GB, if I do the increased memory will come from OWC.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: oregon Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 perfect for my needs March 7, 2016 I would recommend this item to a friend!
Verified Buyer
Reviewer: Anonymous Location: Olympia, WA Age: 55-65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 You were fast and it worked great! May 14, 2013 This was my third order from you folks. Each time you've been quick, the product was exactly as described, and worked perfectly. Also your service dept. was responsive and fast. On top of all that you had the best price. Good job!

I would recommend this item to a friend!

OWC Memory 4.0GB 4.0GB PC8500 DDR3 Mfr P/N: 8566D6R3S4GB OWC SKU: OWC8566D6R3S4GB OWC Memory Upgrade Module Lifetime OWC Limited Warranty Ships: Same Day only $31.99
Add to CartOther World Computing 8566D6R3S4GB In Stock, Click to Buy Now