Name: 32.0GB (4x 8GB) PC3-8500 DDR3 kit for Late 2009 iMac11,1 models.
Brand: OWC
SKU: OWC8566DDR3S32S
Price: 168.99 USD
Availability: InStock
Rating: 4.97 (749 reviews)

OWC Special Offer Available

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Must purchase with: PPDPROSUB1Y-REB29

32.0GB OWC Memory Upgrade Kit

4 x 8.0GB PC8500 DDR3 1066MHz 204 Pin

OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program | 30 Day Money Back Guarantee

Product Specs:

Technology: DDR3 SDRAM
Density: 8GB (8192MB)
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.
OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program
Why do I need more RAM?

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.

COMPATIBILITY
RATINGS

Note: OS X 10.6.3 or Later REQUIRED for utilization of 32GB of memory. To address 32GB of memory when running OS X 10.6 Snow Leopard, you MUST be running in 64-bit mode.

This OWC Memory is compatible with... Learn how to find your Mac's model ID

iMac (27-inch Late 2009)

(October, 2009)

Model ID: iMac11,1

2.66GHz i5, 2.8GHz i7

Detailed specs

Install Videos

Customer Ratings

Write a Review 4.9 / 5 729 out of 749 (97%) reviewers would recommend this product

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Verified Buyer

Reviewer: Ricner14 Location: Las Piedras, PR Age: 25-34 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 Great performance November 28, 2017 I installed this on a MacPro late 2009 5.5 I also installed a SSD. The moment I did the laptop was a whole different machine. Very happy with my purchase. I open, mainly, photography softwares (2-3 at the same time) and it performs great!.

I would recommend this item to a friend! This review is from 6.0GB (2GB + 4GB) PC-8500 DDR3 Kit for MacBook/MacBook Pro Unibody; iMac 2009 Models.. Customer Videos:

Verified Buyer

Reviewer: DjNoelc Location: FL Age: 45-54 Experience Level: IT Professional Owned Product: less than a month

Rating: 5/5 8.0GB Memory for Macbook/Pro November 28, 2017 The product was delivered on time and nicely packatged. I updated my old macbook/pro which only had 4 GB of memory to 8 GB that I purchased. Everything worked perfectly. I waited 2 weeks before writing a review. I am very happy with my purchase experience and this product.

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: Chimpur Location: Toronto,On Age: 25-34 Experience Level: Power User Owned Product: over 6 months

Rating: 5/5 Excellent Ram November 26, 2017 Upgraded my machine and it worked perfectly! Sped my machine up and allowed me to have more apps and tabs running before the system could slow down.

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: olsonr50 Age: Over 65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 MEM did the trick November 19, 2017 My wife's 2009 27" iMac had recently slowed WAY down to the point it would not even boot up reliably. I was about to order her a new iMac when I remembered that this model has easily accessible MEM. Since the issue occurred after I upgraded her machine to High Sierra I looked into the RAM and, sure enough, it had only 4GB! I max'd out the MEM with a purchase from OWC and her machine is running fine again. OWC has been my go-to company for Mac products for many years

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: Rocknrollmom Location: Kansas Age: 55-65 Experience Level: Home User Owned Product: over 6 months

Rating: 5/5 Just what I needed. November 12, 2017 Thanks for the help. the memory defiantly helped with the speed. No problems installing it. I was pretty proud of my 61 year old self!

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: tomoyo

Rating: 5/5 Easy to install & works great November 11, 2017 The RAM is easy to install yourself & works great on my MBP (late 2008) which I later upgraded to El Capitan from Snow Leopard. I followed the video tutorial on how to install the RAM and it is fairly easy (for a beginner like me)

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: Fixit Location: VA Age: 55-65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 Great Service and Product November 4, 2017 Memory arrived on time and was easy to install thanks to online instructions. Would highly recommend.

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: r0m1r3z Location: Almaty, Kazakhstan Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months

Rating: 5/5 Works fine! October 29, 2017 Memory works without any problem. All test success passed. I think OWC memory upgrade is the best option for Mac users around the world.

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: MyWifesITdept

Rating: 5/5 Really made a difference in MacBook speed October 27, 2017 Easy to install. Took two times but once in properly, it’s been a great upgrade!

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: Edmundo Location: Philippines Age: 45-54 Experience Level: Home User Owned Product: over 6 months

Rating: 5/5 Very much needed October 23, 2017 Thank you for giving my old (MBP-mid2009) a big boost. It seems that I have the latest MBP now.

Kudos! Keep-up the good work.

Edmund

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: boricua369 Location: Navarre, FL Age: 55-65 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 The more memory the better October 22, 2017 Decided to max my RAM along with a SSD upgrade. Super fast. Memory working flawlessly.

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: MorroBayMac Location: Morro Bay Ca. Age: 45-54 Experience Level: IT Professional Owned Product: 1-3 months

Rating: 5/5 Always a Great Transaction October 15, 2017 Top quality product is delivered extremely fast from Coast to Coast. Appropriately priced RAM that has never failed me. I wouldn't shop anywhere else.

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: sheridanpa Location: Maine Age: 55-65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 Easy, right... October 15, 2017 My Mac runs a lot faster with more RAM. Buying was easy and confident, as I could be sure of my model, and the video was a good review for installation.

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: ShamSham Location: WA

Rating: 5/5 Works as intended! October 11, 2017 Excellent product that noticeably made a difference in my Mac Book Pro's performance. Super easy to install.

Exceptional Product.

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: BojackWayBack Location: Durant, OK Age: Over 65 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 Perfect October 11, 2017 The ram upgrade on the wife's Mid 2010 MBP from 4 to 8GB made the Mac OS upgrade to El Capitan (and future) a snap. Very easy to install, even she could do it. Thx, OWC is always a pleasure to deal with.

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: WBReview

Rating: 5/5 Great Boost In Performance October 6, 2017 I went from the 4GB ram to the 8GB upgrade kit for my mid 2010 MacBook Pro. The website helped me select exactly what I needed with no hassle. Shipment was fast, upgrade was easy and I'm very happy with having some better response and performance from my 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: Charlywell Location: Lees Summit, MO Age: 55-65 Experience Level: Noob Owned Product: less than a month

Rating: 5/5 The additional RAM has my MBPro humming!! September 25, 2017 I'm absolutely the least tech guy out there but the video instructions were crystal clear and easy to follow. Outstanding job! Installation went without a hitch and my 2010 MBPro is SO much faster now.

Thank you not only for a great product but the great instructional videos. With the confidence gained by this experience I'm about ready to tackle a SSD upgrade.

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: Ransomed Location: Georgia Age: 25-34 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 16GB for a late 2009 iMac September 19, 2017 The sticks of RAM were competitively priced on OWC. The OWC installation video was helpful and it was an easy upgrade. To get the old RAM out you simply pull on a hard plastic ribbon after removing the cover. The RAM is working well. The RAM is helping to squeeze out a bit more life out of this old machine. I updated the OS to Sierra and the machine is doing well.

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: TonyDTigerrr Location: Longwood, FL Age: 45-54 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 Works like a charm September 18, 2017 This memory is awesome. Easy to install and made my Mac Mini at least twice as fast. I should have done this upgrade years back. Thank you.

I would recommend this item to a friend! This review is from 6.0GB (2GB + 4GB) PC-8500 DDR3 Kit for MacBook/MacBook Pro Unibody; iMac 2009 Models.. Customer Videos:

Verified Buyer

Reviewer: mini09 Location: Alberta, Canada

Rating: 5/5 Great product and easy install in 2009 Mac mini September 10, 2017 I installed this 8.0GB ram and a 1TB SSD in my early 2009 Mac mini about a week ago and waited until now to do a review. The little Mini is now faster than our new 27 inch iMac, but I don't have too much loaded on to it yet. The installation was super easy while using the videos from MacSales. Anyone with a little mechanical inclination and confidance could do this. After installing ElCapitan 10.11.6 on the Mini I was anticipating some settings adjustments but was very pleased to see that everything had updated automatically. The negotiated link speed was updated to 3 and now the Mini is lightning fast and boot up time is now about 30 seconds.

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: BenitezC Location: México Age: 35-44 Experience Level: Home User Owned Product: 1-3 months

Rating: 5/5 Great September 6, 2017 I have a "new" white macbook with this upgrade. Run with Sierra OS!

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: JTil1987 Location: North Carolina Age: 25-34 Experience Level: Home User Owned Product: over 6 months

Rating: 5/5 Great Product! September 4, 2017 This memory upgrade is excellent. OWC said their setup was the only way to squeeze 16GB into my Mac (rated only for 8GB). At first I didn't believe them so I ordered 2 8GB chips from another vendor; big mistake. Those chips didn't work at all. I sent them back and ordered from OWC and the chips worked perfectly! Install was a bit tricky but if you follow the instructions you shouldn't have any issues.

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: Broha Location: California Age: 45-54 Experience Level: Hobbiest Owned Product: less than a month

Rating: 5/5 2010 MacBook Pro memory upgrade. September 2, 2017 I received my new memory upgrade to replace my 4GB (2x2GB) Memory with 16GB (2x8GB) and the first set of memory cards did not work. After calling Macsales tech support they sent me a replacement set. Two days later I installed the new memory and my MacBook Pro fired right up. My MacBook Pro now performs better then new. I also replaced my 250GB hard drive with OWC's 1TB SSD. The instructions for both upgrades was very helpful and the installation was simple. I highly recommend these upgrades to anyone with an older MacBook. The investment was well worth it.

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: Monty60

Rating: 5/5 Perfect August 30, 2017 Everything went well and the computer performs super fine.

Thank you.

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: gloumax Location: Blainville, quebec Canada Age: 55-65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 Work great August 29, 2017 It was great, I install it right away and it work well. Ire command it!

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 Module PC3-8500. Customer Videos:

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OWC Memory 32.0GB 4 x 8.0GB PC8500 DDR3 Mfr P/N: OWC8566DDR3S32S OWC SKU: OWC8566DDR3S32S OWC Memory Upgrade Kit Lifetime OWC Limited Warranty Ships: Same Day

Reviews (749)

only $168.99

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