Get exclusive deals delivered to your inbox!

Start saving today. »

We're sorry, but this item is no longer for sale. However, there may be more Memory items available.

Product Specs:
  • Technology: DDR3 SDRAM
  • Density: 4GB (4096MB)
  • RoHS: Yes
  • Pin Count: 204-pin
  • Op. Temp.: 0C to +85C
  • Data Rate: DDR3-1066
  • Speed: PC3-8500
  • CL: CL = 7
  • Cycle Time: 1.875ns
  • Voltage: 1.5V
  • ECC: Non ECC
  • Module Ranks: Dual Rank
  • Register: Non Parity
  • Low Noise 8-Layer PCB
  • Meets and/or Exceeds Apple/Intel Specifications
  • Fully compliant with JEDEC specifications
  • Free Installation Videos & Manuals
  • Warranty Safe Upgrade.
  • Why do I need more RAM?
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
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
MacBook White Unibody
MacBook (Mid 2010)
(May, 2010)
Model ID: MacBook7,1
2.4GHz
MacBook Pro Unibody
MacBook Pro (13-inch Mid 2010)
(April, 2010)
Model ID: MacBookPro7,1
2.4GHz, 2.66GHz

Customer Ratings

Write a Review 4.9 / 5 713 out of 733 (97%) reviewers would recommend this product
1 2 3 4 5 6 7
Verified Buyer
Reviewer: Colender Location: MI Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Exactly what I needed November 21, 2018 This was perfect to give a performance boost to an old Mac Book Pro I am refurbishing

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: Dirk Location: Monterey, C.A. Age: 55-65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Great upgrade and easy to install! November 13, 2018 Had zero difficulty installing the product. Great upgrade for the price! Definitely 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: expectant Location: Long Island N Age: Under 18 Experience Level: Home User Owned Product: over 6 months
Rating: 4/5 Installation flawless - outcome ok November 6, 2018 The installation of 16GB of ram in my IMAC was flawless. The instructions were excellent. I discovered a fair amount of dust bunny stuff in the compartment and this needs attention. After I closed up the IMAC and turned it on, it booted flawlessly. Then the major question: was peformance better? The answer is a qualified yes. Some of the delay was not improved and may relate to my Cable Service (Optimum) and some may relate to performance issues with Chrome. So the outcome was positive but maybe not the tremendous increase of speed that I expected. No fault of this wonderful company.

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: ebis Location: basel Age: 45-54 Experience Level: Noob Owned Product: less than a month
Rating: 5/5 I upgraded my macbook aluminium from 2 to 8GB and it is performing really well November 1, 2018 I upgraded my macbook aluminium from 2 to 8GB and it is performing really well

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: IMacMan Location: New York City Age: Over 65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Like New October 29, 2018 OWC/MacSales.com was a pleasure to deal with. To make sure I ordered the correct memory upgrade for my IMac, I called and spoke with a tech representative. He checked carefully with me and then re-assured me what to order. The upgrade kit was delivered as ordered. Once installed (which was easy and took only about 10 minutes), the computer worked as quickly as it did when I first purchased it years ago. Very happy with OWC. I already recommended them to a friend and would definitely order from them again.

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: HotSpot Location: Homer, AK Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Simple Upgrade · Great Result October 25, 2018 I just upgraded my MacBook (13-inch, Mid 2010) from 8GB RAM to 16GB RAM. OWC makes it so easy to order the right parts by making sure you select the right MacBook model and ID. In my case, this was a MacBook7,1. I ordered with confidence, they shipped the next day!

When it arrived, I went directly to the Install Videos they provide for my model MacBook7,1 and the hardest part was unscrewing the 8 itty-bitty screws! I was grateful that I had already had purchased my screwdriver kit from OWC years ago.

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

Verified Buyer
Reviewer: Hank Location: San Diego, CA Age: 25-34 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great Parts, Fast Shipping October 24, 2018 RAM is always an easy upgrade on any computer and these showed up quickly and in professional packaging. Work wonderfully after days of heavy use. WOuld recommend to anyone trying to liven up an older macbook!

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: federash
Rating: 5/5 good service October 16, 2018 I would recommend this item to a friend! This review is from 8.0GB PC3-8500 DDR3 1066MHz SO-DIMM 204 Pin SO-DIMM Memory Upgrade Module PC3-8500. Customer Videos:
Verified Buyer
Reviewer: Dirk Location: Monterey, C.A. Age: 55-65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Great, works as intended! September 24, 2018 We talked with the representatives about my computer before ordering and I ordered what he had recommended. Easy to install. So far so good. Thanks for the help.

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

Verified Buyer
Reviewer: 12huserr Location: Columbus, IN Age: 25-34 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Great upgrade!! September 5, 2018 Great upgrade for the price, easy install.

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: Kracka Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Improved the performance of my MacBook Pro September 2, 2018 Running High Sierra on a MacBook Pro (15-inch, Mid 2010), these memory chips greatly helped the stability and performance. Easy to install, power down, flip macbook over, just note which screws are the long ones on the bottom(3 in total), press tabs on each side of old memory chipsets, carefully remove when they pop up, insert new chipset. Power up and it's automatic from there, once it loads the desktop and settles suggest doing at least one restart to ensure changes took place.

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: Khair Location: My
Rating: 5/5 RAM for MacBook Pro 2010 August 25, 2018 Excellent services. Never regret to order from them. 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: miki
Rating: 5/5 Great product August 17, 2018 Bought this RAM to boost the performance of my MBP 2010 13". Very satisfied with the product. Had no issues during installation or runtime of the system.

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

Verified Buyer
Reviewer: Bargainhunter Location: Baltimore, MD Age: 55-65 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 easy to order. easy to use. Dramatic results August 15, 2018 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: u2fan003
Rating: 5/5 Great! August 13, 2018 Got my 8-year-old MacBook working really fast, great product & service! Had quick query to ask on online chat and was replied to instantly, with great help. Thanks OWC!

I would recommend this item to a friend! This review is from 8.0GB PC3-8500 DDR3 1066MHz SO-DIMM 204 Pin SO-DIMM Memory Upgrade Module PC3-8500. Customer Videos:

Verified Buyer
Reviewer: Need4Speedrw Location: Hamilton, Ontario, Canada Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Memory Upgrade, Mac Mini 4.1 (16 GB) August 7, 2018 Received shipment quickly and the item was well packaged. I installed 2, 8 GB ram modules in all of about five minutes with zero difficulty. Turned the Mac Mini on and it recognized the new RAM almost instantaneously. There's a definite improvement over having just 2 x 2 GB in this Mac Mini (mid 2010). Thank you OWC, very satisfied with this purchase!

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

Verified Buyer
Reviewer: retiredguy Location: Austin, TX Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Don't hesitate to upgrade your ram August 7, 2018 Great service and very helpful--called to confirm I was ordering the right ram and got great advise. The video instruction they provide is excellent-I am a home owner user with very little talent but upgrading the ram in my Mac desktop, late 2009 27 inch, was a 5 minute job. The core must accept the ram and in my case did--I7 core model 11,1 Even though the title of the product may not incorporate your particular model, as in my case the ram fits and a phone call was all that I needed to complete the order. Great guarantee so just do it! Increasing the ram really helps, especially considering that operating system upgrades can slow your computer over time.

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

Verified Buyer
Reviewer: SteveS0353 Location: San Diego, CA Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 MacBook Life Extended August 7, 2018 My daughter's MacBook was running painfully slow with the latest OS and updated apps. The solution was to double the physical memory from 4MB to 8MB. This affordable upgrade has returned the MacBook to being responsive and extended the useful life of the MacBook.

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: Ei4115 Location: Lee Center,Ny Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Just what I needed July 29, 2018 Went from 4gb to 16gb. Easy install and really speeded use my older iMac.

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: gdesvaux Location: Mauritius Experience Level: IT Professional
Rating: 4/5 Working good for mac mini 2.26 late 2009 July 28, 2018 No problem.

2x4Gb (total 8Gb Ram)

Working Perfectly for my Mac Mini 2.26 Late 2009

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: macbook70 Location: phoenix, az. Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 money well spent July 26, 2018 I purchased my macbook in 2008, the late, intel, aluminum body. it came with 2gb of memory and the upgrade then to 4 gb was $200. I just installed the 4gb of memory i purchased from OWC for $32. An fyi, the youtube video about installation instructs one to use a 00 philips screwdriver, WRONG, one needs the 000 phillips. The installation went great and my macbook is now much quicker. Also of note, the delivery was just a couple days and securely packaged.

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC-8500 DDR3 kit for MacBook/MacBook Pro Unibody, iMac 2009, Mac mini 2009/2010. Customer Videos:

Verified Buyer
Reviewer: JimmyMTL Location: Ottawa, Ontario Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Easy Peasy Lemon Squeezy July 25, 2018 The RAM was a breeze to install with one minor hiccough, the notches on my motherboard were inverse to those on the video. Since the RAM is notched, and since I could see how the others were installed, it was simple and fast.

Great product,

I would recommend this item to a friend! This review is from 4.0GB (2x 2GB) PC-8500 DDR3 kit for MacBook/MacBook Pro Unibody, iMac 2009, Mac mini 2009/2010. Customer Videos:

Verified Buyer
Reviewer: CaliMacLover Location: Moreno Valley, CA Age: 35-44 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Saved a dying MacBook July 24, 2018 Purchased this memory upgrade to replace a bad memory chip I had in an old 13" MacBook. It originally only had 4 gigs of memory (2 x 2 gig memory cards) and only one would read. Purchased this upgrade to get the MacBook processing a little faster and it did just the trick. Definitely still need to replace the entire MacBook but this memory upgrade works wonderfully.

Recently upgraded the hard drive and I wish I had known about this company and purchased it from them. I will be doing all my shopping for discounted Mac products here, the order was received promptly and the products are top notch.

I would recommend this item to a friend! This review is from 4.0GB PC-8500 DDR3 1066MHz SO-DIMM 204 Pin SO-DIMM Memory Upgrade Module PC3-8500. Customer Videos:

Verified Buyer
Reviewer: Technomagnon Location: Middle America Age: 35-44 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Great quality, outstanding instructions! July 18, 2018 This was a simple memory upgrade and OWC made it even easier. The memory itself came quickly and well packaged to prevent any damage from mis-handling during shipping. The tutorial video walked through the process and made it very easy to repeat on my own. Again, upgrading memory isn't rocket science but this experience reminded me why I love doing business with OWC. Thank you all for another great experience!

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: europeka Location: Québec Age: Over 65 Experience Level: Home User Owned Product: over 6 months
Rating: 5/5 Excellent July 17, 2018 The product is excellent and it is fast to install on my 2009 iMac.

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:

OWC Memory 4.0GB 4.0GB PC8500 DDR3 Mfr P/N: 8564DDR3S4GB OWC SKU: OWC8564DDR3S4GB OWC Memory Upgrade Module Lifetime OWC Limited Warranty
Sold Out
Additional Capacities & Kits:
  • 2GB
    • Ships: Same Day
    • Only $12.99
    • $12.99
  • 4GB
    • Ships: Pending
    • Only $28.99
    • $28.99
  • 4GB (2x2GB)
    • Ships: Same Day
    • Only $25.98
    • Matched Kit for $24.99
  • 6GB (2GB+4GB)
    • Ships: Same Day
    • Only $41.98
    • Matched Kit for $40.99
  • 8GB (2x4GB)
    • Ships: Same Day
    • Only $49.88
    • Matched Kit for $49.88
  • 8GB
    • Ships: Same Day
    • Only $54.99
    • $54.99
  • 16GB (2x8GB)
    • Ships: Same Day
    • Only $109.98
    • Holiday Feature Saver $99.88
  • 16GB (4x4GB)
    • Ships: Same Day
    • Only $99.88
    • Matched Kit for $99.88
  • 32GB (4x8GB)
    • Ships: Same Day
    • Only $219.96
    • Holiday Feature Saver $198.88