Your upgrades and gear ship safely with OWC.
Learn more. »

Home » Memory

OWC Special Offer Available

$70.99 off *NOW* Get Parallels Desktop Pro Edition - Windows/Multi OS Compatibility software for Mac - Only $29.00 with select OWC SSDs, HDDs, Memory, External Storage, and Optical Drives! (Limit 3 rebates, 1 rebate per qualifying item)
Must purchase with: PPDPROSUB1Y-REB29

8.0GB OWC Memory Upgrade

8.0GB PC8500 DDR3 1066MHz 204 Pin
OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program | 30 Day Money Back Guarantee
Memory Image
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.
- Please allow up to 14 Days from the time we receive your memory for testing and rebate processing.
- The OWC Rebate is for up to the same number of memory modules purchased and must be in working order.
Note: Apple OS 10.7.5 or Later REQUIRED for utilization of more than 8GB of total system 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
Detailed specs
MacBook Pro Unibody
MacBook Pro (13-inch Mid 2010)
(April, 2010)
Model ID: MacBookPro7,1
2.4GHz, 2.66GHz
Detailed specs
Install Videos
Mac mini Intel
Mac mini (Mid 2010)
(June, 2010)
Model ID: Macmini4,1
2.4GHz, 2.66GHz
Detailed specs
Install Videos
Mac mini Intel
Mac mini (Mid 2010 Server)
(June, 2010)
Model ID: Macmini4,1
2.66GHz
Detailed specs
Install Videos
iMac Intel
iMac (27-inch Late 2009)
(October, 2009)
Model ID: iMac11,1
2.66GHz i5, 2.8GHz i7
Detailed specs
Install Videos
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 4.9 / 5 729 out of 749 (97%) reviewers would recommend this product
1 2 3 4 5 6 7
Verified Buyer
Reviewer: Lulu Age: 25-34 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 perfect upgrade September 8, 2020 This was a perfect upgrade to make to my mid-2009 Macbook pro 15 inch. Helped to make my old laptop work like new.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Manimal Location: Boynton Beach, FL Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 It's ALIVE!!! September 1, 2020 I got the 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010 for my wifes MacBook 2010 along with 2.0TB OWC Mercury Extreme Pro 6G 2.5-inch 7mm SATA 6.0Gb/s Solid-State Drive. It took an unusable piece of plastic and transformed it into a blazing rocket. All 16GB were recognized by the MacBook 2010. She should be able to get a few more years of use out of it now. Installation was very easy thanks to the handy videos hosted by OWC.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: DPix Location: WMass Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 The right product for the best price with the best quality August 30, 2020 Ordering was easy OWC directed me to the right product for my iMac. I'm good with the price and the install videos eliminate any questions

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: Salva Location: Clewiston Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Easy to install. August 29, 2020 I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:
Verified Buyer Top 250 Contributor
Reviewer: Artysan Location: Fort Lauderdale, FL Age: 55-65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Top quality DIMMs, reliable seller August 24, 2020 OWC has been my go-to for RAM for 15 years +. Dozens of examples, no failures, great well-researched site to locate my product every time. I don’t even look elsewhere.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: JoeJoeJoe Location: Des Moines Age: 35-44 Experience Level: Hobbiest Owned Product: less than a month
Rating: 5/5 Outlasted my computer August 22, 2020 I put this ram in both my one 2010 macbook and my mother's 2010 mac mini. The ram outlasted the computers. I recycled the computers but gave the ram to friends who could still use it.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Patrick3 Location: Canada Age: 25-34 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Worth the investment August 10, 2020 I have a 2010 Macbook and upgrading the memory has made a world of difference. I believe OWC is the only compagny that makes compatible 16GB memory for 2010 Macbooks so don't look anywhere else.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: Fieldjockey
Rating: 5/5 Product worked from the get go August 6, 2020 I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:
Verified Buyer
Reviewer: K1dW1K Location: Torrance, Ca Age: 45-54 Experience Level: Hobbiest Owned Product: 1-3 months
Rating: 5/5 OWC Ram has never failed me. July 10, 2020 This is probably my 3rd set of ram from owc over the years and the quality has never failed me. Highly recommended!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Drive4Fun Location: Hoboken, NJ Age: 45-54 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Great set of 4 memory units, revived my iMac July 10, 2020 I was wondering whether I should trash my old iMac from late 2009. Then I decided to try to move it to Linux and upgrade a little bit, so I bought these 16 GB (4x4GB) and an SSD and now I have an old new iMac, which works great with Linux and delivers performance, which I never experienced with Mac OSX before.

If anyone decider to upgrade memory with these units, my recommendation is to also get "DIY Bundle 1.0TB OWC 3G SSD and HDD Kit for Late 2009 - 2010 iMacs" or the 2TB one. They are bringing a new life in your iMac and you don;t have to recycle it.

I would recommend this item to a friend! This review is from 16.0GB (4x 4GB) PC-8500 DDR3 kit for all Apple iMac 21.5" and 27" Models (Oct/2009). Customer Videos:

Verified Buyer
Reviewer: drbobcs Location: Texas Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 It Just Works July 4, 2020 I always trust OWC. Find the product for my computer, order it, it comes, and it works. Always. Have an install question, the videos are complete. Gives me all I need to know.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: PSpitsen Location: Orange County, CA Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 More memory equals better performance July 4, 2020 Recently received my 32 MB upgrade kit for my 2009 iMac. Installation was a breeze as I used the streaming video from OWC's website for my instructions. I have always purchased my computer memory from OWC through the years. Never had any issues at all and will continue to purchase into the future.

I would recommend this item to a friend! This review is from 32.0GB (4x 8GB) PC3-8500 DDR3 kit for Late 2009 iMac11,1 models.. Customer Videos:

Verified Buyer
Reviewer: MacFan76 Age: 25-34 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Exactly what I needed for a 2010 Macbook Pro 7.1 July 3, 2020 Running 4GB of Ram in the year 2020 can be a bit underpowered at times. Making the change to 8GB made a HUGE difference! It's especially noticeable when running multiple tabs or apps. It breathes new life into an old system. I wish I would've done it sooner, and it was incredibly easy to install. I highly recommend this product, and this website in general!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: evelyn
Rating: 5/5 Extended life of my 2009 27” MAC July 3, 2020 The early 2009 27” MAC started having frequent whirling ball issues. Doubling the RAM purchased from OWC solved that problem. The 2009 is not equivalent to the newer models but with the doubled RAM and some care to get rid of useless files it works just fine. Thank you OWC for your fairly priced good quality products and you excellent, friendly tech support too.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: coffeedrinker01 Location: Villa Park, IL Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 8.0GB (2x 4GB) PC-8500 DDR3 June 13, 2020 Improved the MacBook 2009 for my wife! She is happy with it because no more slow system!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: kdg12 Location: Greensboro, NC Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Ram upgrade worked perfectly May 15, 2020 I bought 8GB ram from a seller on eBay that did not work in my 2009 MacMini, So, I bought from OWC and it worked perfectly right out of the package.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Azza Location: United Kingdom Age: 25-34 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Very fast May 11, 2020 Brought my MacBook to life and is now usable. What a difference!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: Siamak Age: 55-65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Gave a new lease of life to my old mac April 18, 2020 Just Brilliant. Thanks.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Exvandal Location: Sunshine State, FL Age: 45-54 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 The Mac Mini lives! April 2, 2020 Added this to an orphaned Mac Mini (late 2009) w/ 2GB memory.

Shortened boot time dramatically and gave the Mini new life!

Now to add an SSD....

Thanks OWC and macsales!

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: jthj Location: kc, mo Age: 35-44 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 great product January 28, 2020 works as it should have had zero issues, just what i know to expect from owc

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: atb2003 Location: Denver, CO Age: 25-34 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Mid-2010 model running like new!! January 24, 2020 Could not be happier with this purchase and upgrade from 4GB to 16GB RAM on my older Mid-2010 macbook pro. The site made it easy to identify exactly which product I needed (8GB ram x2), arrived in my mailbox 3 days later (earlier than expected), and the instructional video helped me complete the install in no time (like, 5 minutes max). My machine immediately recognized the upgrade on reboot.

My machine was basically a brick and after a fresh OS install and upgrading the RAM, it's running like new. I'm now using it to run high-CPU usage applications like MainStage and Logic without any issues. Best $75 I've spent in a long time!!!

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

Verified Buyer
Reviewer: Nairb Location: Finger Lakes, NY Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Like a new computer November 18, 2019 What a remarkable improvement in speed and performance for a 9 year old MacBook Pro running CAD, it is like a new computer. Great bang for the buck, 10 minute install, worked perfect first time.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Olddude60 Location: Ontario Canada Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 The shipping and product better than expected. October 22, 2019 I was looking for memory for our iMac. Found what was needed quickly. Check was simple. Really impressed how fast it came to me in Ontario Canada. The other thing that I was impressed with is how well it was packaged to product the memory. Great job overall.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: DesertRagWeed Location: Phoenix, AZ Age: Over 65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Expanded memory on 2009 13" MacBook Pro October 12, 2019 Like all minimal memory computers, my 2009 13" MacBook Pro really needed more memory to give decent performance. I purchased 8GB of memory from OWC and have installed it. I was very pleased with how going from the stock 4GB of memory to the 8GB made such a very visible difference in the performance of that old laptop.

I would recommend this item to a friend! This review is from 8.0GB (2x 4GB) PC-8500 DDR3 kit for iMac '09; MacBook/Pro Unibody '08-10. Customer Videos:

Verified Buyer
Reviewer: Jamboy3 Location: somewhere in the Republic of Texas Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Very happy musician. September 12, 2019 You guys promised me 7 day delivery and I got it today after just 4 days! Thank you. I installed it and had to check the speed. I gotta say...I am really happy with the upgrade. I had no issues on boot up. I had previously installed a SSD that really gave me great performance. This is icing on the cake with the new RAM. My music programs (Logic, MainStage, and Band in a Box) work much better. It's hard to find good service out here. You guys at OWC are the exception. I will be back soon. Thanks.

I would recommend this item to a friend! This review is from 16.0GB (2x 8GB) PC3-8500 DDR3 kit for 27" iMac 2009, Mac mini 2010, MacBook 2010, & MacBook Pro 13" 2010. Customer Videos:

OWC Memory 8.0GB 8.0GB PC8500 DDR3 Mfr P/N: 8566DDR3S8GB OWC SKU: OWC8566DDR3S8GB OWC Memory Upgrade Module Lifetime OWC Limited Warranty Ships: Same Day
Reviews (749)
only $42.99
Add to CartOther World Computing 8566DDR3S8GB In Stock, Click to Buy Now
Additional Capacities & Kits:
  • 2GB
    • Ships: Same Day
    • Only $9.79
    • $9.79
  • 4GB
    • Ships: Same Day
    • Only $27.99
    • Bundle Priced for $23.79
  • 4GB (2x2GB)
    • Ships: Same Day
    • Only $19.58
    • Matched Kit for $18.79
  • 6GB (2GB+4GB)
    • Ships: Same Day
    • Only $33.99
    • Matched Kit for $33.99
  • 8GB (2x4GB)
    • Ships: Same Day
    • Only $46.99
    • Matched Kit for $46.99
  • 8GB
  • 16GB (2x8GB)
    • Ships: Same Day
    • Only $85.98
    • Cyber Saver $82.99
  • 16GB (4x4GB)
    • Ships: Same Day
    • Only $87.99
    • Matched Kit for $87.99
  • 32GB (4x8GB)
    • Ships: Same Day
    • Only $171.96
    • Cyber Saver $159.99
Rocket Yard Blog  /  DIY Install Videos  /  Join Our Affiliate Network  /  Covid-19 Response
About Us  /  Sustainability is Good Business /  Join the OWC Team /  Media+Newsroom  /  Privacy Promise
© 2000-2020 Other World Computing, Inc., All Rights Reserved. Site Terms
Guest ID: 68013647 Load Time: 0.349 seconds
Trustpilot
Close

We use cookies to provide you with a full shopping experience, including personalized content, and to help us improve your experience. To learn more, click here.
By continuing to use our site, you accept our use of Cookies, Privacy Policy and Terms of Use.