Name: 32.0GB (4x 8GB) PC3-8500 DDR3 kit for Late 2009 iMac11,1 models.
Brand: OWC
SKU: OWC8566DDR3S32S
Price: 159.99 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: theAZone Location: St-Sauveur, QC Age: 55-65 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 G R E A T January 11, 2018 Added the RAM with the help of your online videos. All GREAT thanks OWC, R

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: Zacshap21 Location: Ontario, Canada Age: Under 18 Experience Level: Hobbiest Owned Product: 1-3 months

Rating: 5/5 Incredible Product January 9, 2018 This product changed my laptop immensely. From 4GB to 8GB, my computer now runs like brand new. Starting the computer would take up to two minutes, and now takes under ten seconds. Very impressed.

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: CaddyGuy Location: WI Age: 25-34 Experience Level: Noob Owned Product: 1-3 months

Rating: 5/5 Huge Improvement January 1, 2018 Big improvement in performance. I'm not super computer savvy but my macbook pro was bogging down. Very slow sometimes. So a friend told me to get some more ram from this website. Upgraded from 4gb to 8gb. WOW! It is much quicker to respond now and rarely if ever has any issues bogging down. Thanks for keeping my 7 year old Macbook Pro kicking a little longer!

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: LongLiveMAC

Rating: 5/5 More RAM December 29, 2017 Other World Computing RAM is still running like a CHAMP after 3 years.

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: RentedMule Location: Galesburg, MI Age: 45-54 Experience Level: Power User Owned Product: over 6 months

Rating: 4/5 Good RAM at a good price December 28, 2017 Factory installed RAM for Macs tends to be overpriced. OWC memory works great in any Mac, and is much better priced.

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: luv2buy Location: Plymouth, MN Age: 55-65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 Easy to install December 19, 2017 I was having some issues with my 2010 MacBook Pro. Apple stopped supporting this model. One of their advisers suggested that I order 8 MG ( 2- 4mg) memory sticks online and replace to improve the macbook's operation. The memory sticks arrived when expected. They were well packaged. IT was very easy to remove the old sticks and replace with these. It's certainly has made a difference in the day to day operations.

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: faabca Location: alberta, canada Age: Over 65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 good so far, recent purchase December 18, 2017 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: Macstheonlyway Location: Texas Age: Over 65 Experience Level: Power User Owned Product: 1-3 months

Rating: 5/5 Great upgrade December 17, 2017 Had OWC install. Works as expected, now approaching 2 years without a hiccup on 7 year old Mini. Can't ask more than high quality memory, competent installation and lifetime warranty! Great turnaround 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 Top 250 Contributor

Reviewer: GadgetGuru Location: Texas Age: 45-54 Experience Level: Power User Owned Product: over 6 months

Rating: 5/5 zoom zoom zoom December 17, 2017 They don't tell you how much faster the mac mini runs when you add some RAM. I don't need numbers and benchmarks to notice the change. It is bullet fast now.

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: BBBtheB Location: Gold Hill, NC Age: 45-54 Experience Level: Noob Owned Product: less than a month

Rating: 5/5 very helpful December 14, 2017 This 6.0GB PC-8500 DDR3 Kit for MacBook iMac 2009 Models was very helpful in speeding up my computer. I am very satisfied with this product.

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: Lmac Location: Las Vegas Age: 45-54 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 Blast off on a 2010 MacBook! December 11, 2017 I installed this 16 gigs of ram into a MacBook 7,1 from 2010 and it runs High Sierra as well as my 2015 MacBook Pro with a 2.9 GHz processor. Go figure. You can find the old MacBook on eBay for $150 in very good condition. So for $310 you have a fantastic Mac laptop running the latest os like a champ. Hmmmmm.

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: Bigal15 Location: West Covina, CA Age: 45-54 Experience Level: Power User Owned Product: less than a month

Rating: 5/5 New life for my Mac December 10, 2017 I have so much stored on my 2010 Mac Book Pro that I wasn't quite ready to get a new computer. The 16 gigs of memory make it move like new. I'm very happy. Now I need to upgrade my storage space on 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: roli Location: chicago Age: Over 65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 working so far December 10, 2017 i have an old aluminum unibody macbook that should only take 4 gb of memory but i was able to upgrade to the 8 gb with no problems so far

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: Apple

Rating: 5/5 The product has great support information December 1, 2017 Video made the RAM replacement easy.

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: marty39 Location: Holmdel, NJ Age: Over 65 Experience Level: Home User Owned Product: less than a month

Rating: 5/5 Gave life to an older Mac November 29, 2017 This 8GB kit went into a Mid-2010 Mac Mini that is still running Snow Leopard, and was showing spinning beachballs more than it was showing an active screen. The DIMMs went in according to instructions, and when the Mac was closed up and turned on again the beachballs became a rare sight.

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: Guzzy

Rating: 5/5 This memory was an easy, affordable upgrade. November 28, 2017 Memory was shipped as advertised and served its purpose perfectly.

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: 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:

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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 $159.99

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