---
product_id: 1677293
title: "Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V"
brand: "corsair"
price: "€ 55.76"
currency: EUR
in_stock: true
reviews_count: 12
url: https://www.desertcart.sk/products/1677293-corsair-cmsa4gx3m1a1066c7-apple-certified-4gb-1x4gb-ddr3-1066-mhz-pc3
store_origin: SK
region: Slovakia
---

# 1066MHz speed 4GB DDR3 SO-DIMM 1.5V low voltage Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V

**Brand:** corsair
**Price:** € 55.76
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your MacBook Pro’s brainpower — don’t get left behind!

## Quick Answers

- **What is this?** Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V by corsair
- **How much does it cost?** € 55.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/1677293-corsair-cmsa4gx3m1a1066c7-apple-certified-4gb-1x4gb-ddr3-1066-mhz-pc3)

## Best For

- corsair enthusiasts

## Why This Product

- Trusted corsair brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Efficient 1066MHz Speed:** Optimized clock speed ensures smooth, lag-free workflow for demanding apps.
- • **Energy-Smart 1.5V Operation:** Lower voltage means cooler operation and better battery life for your MacBook Pro.
- • **Lifetime Warranty Confidence:** Backed by Corsair’s limited lifetime warranty for long-term peace of mind.
- • **Boost Your Mac’s Multitasking Power:** 4GB DDR3 memory module designed to elevate your laptop’s performance instantly.
- • **Seamless Apple Certified Compatibility:** Tested in Apple labs for perfect fit & function with MacBook Pro models (2009-2010).

## Overview

Corsair’s Apple Certified 4GB DDR3 1066MHz SO-DIMM memory module is engineered specifically for mid-2009 to mid-2010 MacBook Pro models. Delivering reliable, energy-efficient performance with a 1.5V low voltage design and tested for flawless Apple compatibility, this RAM upgrade is a proven way to boost multitasking and overall system responsiveness. Backed by a limited lifetime warranty, it’s the smart choice for professionals who demand seamless performance and longevity.

## Description

Corsair Apple Mac 4GB DDR3 1066Mhz CL7 Apple Certified SODIMM ModuleCORSAIR Mac Memory, 4GB 1066MHz C7 DDR3 SODIMM for Apple iMac, MacBook and MacBook Pro 4GB (1x4GB). Tested at Apple’s Compatibility Labs to ensure best form, fit and function with all current products that have official Apple support for 4GB SO-DIMMs. Adding system memory is one of the most effective ways to improve overall performance and Corsair’s Mac Memory offers customers a solid solution with limited lifetime warranty. Compatible with MacBook Pro (13-inch, Mid 2009), MacBook Pro (13-inch, Mid 2010), MacBook Pro (15-inch, Mid 2010), MacBook Pro (15-inch, 2.53GHz, Mid 2009), MacBook Pro (15-inch, Mid 2009), MacBook Pro (17-inch, Mid 2010), MacBook Pro (17-inch, Mid 2009), MacBook Pro (17-inch, Early 2009).

## Features

- Density: 4GB (1x4GB SO-DIMM)
- Speed: 1066MHz CL7
- Timing: 7-7-7-20 (1066MHz)
- Type: DDR3
- Format: SO-DIMM
- Pin Out: 204 Pin
- Voltage: 1.5V. Memory Type: DDR3; Speed: 1066MHz
- Compatible with MacBook Pro (13-inch, Mid 2009), MacBook Pro (13-inch, Mid 2010), MacBook Pro (15-inch, Mid 2010), MacBook Pro (15-inch, 2.53GHz, Mid 2009), MacBook Pro (15-inch, Mid 2009), MacBook Pro (17-inch, Mid 2010), MacBook Pro (17-inch, Mid 2009), MacBook Pro (17-inch, Early 2009)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| RAM | 4 GB DDR3 |
| Memory Speed | 1066 MHz |
| Brand | Corsair |
| Series | CMSA4GX3M1A1066C7 |
| Item model number | CMSA4GX3M1A1066C7 |
| Operating System | Microsoft |
| Item Weight | 0.035 ounces |
| Product Dimensions | 13 x 7.13 x 2 inches |
| Item Dimensions  LxWxH | 13 x 7.13 x 2 inches |
| Color | 1066Mhz |
| Computer Memory Type | DDR3 SDRAM |
| Voltage | 1.5 Volts |
| Department | Default Category |
| Manufacturer | Corsair |
| ASIN | B00505EZYM |
| Is Discontinued By Manufacturer | No |
| Date First Available | May 9, 2011 |

## Product Details

- **Brand:** Corsair
- **Computer Memory Size:** 4 GB
- **RAM Memory Technology:** DDR3
- **Memory Speed:** 1066 MHz
- **Compatible Devices:** Laptop

## Images

![Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V - Image 1](https://m.media-amazon.com/images/I/71puity-9qL.jpg)
![Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V - Image 2](https://m.media-amazon.com/images/I/619WD6+259L.jpg)
![Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V - Image 3](https://m.media-amazon.com/images/I/71c5sYRtWFL.jpg)
![Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V - Image 4](https://m.media-amazon.com/images/I/81q+CEspHvL.jpg)
![Corsair CMSA4GX3M1A1066C7 Apple Certified 4GB (1x4GB) DDR3 1066 MHz (PC3 8500) Laptop Memory 1.5V - Image 5](https://m.media-amazon.com/images/I/71PTRbYQwuL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Hi, i have a macbook pro a1261 late 2008, 17",  is it compatible?**
A: Works on my late 2008 15" Mac book pro, not sure if the 17 takes the same but I would imagine it does

**Q: Hi, i have macbook pro (13-inch, mid 2009), 2.26 ghz intel core 2 duo, is it compatible?**
A: I put this in a mid 2009 13 inch MacBook Pro 2.53ghz and it worked great and easy to install.

**Q: Hello, I have a 2009 Macbook unibody core 2 duo Model A1342.  Is this one compatible? cheers!**
A: Hello, yes this RAM is gonna work fine on your MAC.

**Q: Hi Does this ram work with 15" inch macbook pro mid 2010**
A: i installed it on 15 inch macbook pro 2009, im not sure about 2010 sorry

## Customer Reviews

### ⭐ 1.0 out of 5 stars







  
  
    DO NOT BUY for Macbook Pro 2010---don't make my very expensive mistake of buying this ill-fitting RAM!
  

*by Q***P on Reviewed in the United States on November 17, 2015*

I finally got fed up with memory-hog Chrome slowly killing my 2010 Macbook Pro (4GB RAM), and decided to upgrade.  I researched the proper specs, and read reviews of a lot of different suppliers on Amazon, searching for "2010 MBP" or "2010 Macbook Pro" to make sure that other users had a good experience with this particular brand of memory---there were quite a few positive reviews for this memory in the 2010 MBP (and a few negative ones), so I bought it.  BIG MISTAKE!!!The original Apple memory (2 x 2GB) came out easily, and I put the new 2 x 4 GB Corsair memory in---it went in and appeared to be seated correctly, though it felt like a tighter fit than the original memory.  Spoiler alert--it IS tighter than the original memory; the Corsair sticks are fatter than the Apple product, and this caused no end of problems!!I turned my laptop on and got the deadly 3 beep code indicating that there is something wrong with the memory :(  I took the computer apart to remove the memory sticks, and found that they were almost un-budge-able!  I got the top stick out after several minutes of maneuvering and retried the computer to see if I could get a startup screen with just the bottom stick---nope, still the 3 beep code of death, so clearly the bottom stick wasn't working and needed to be taken out.It took close to one hour and a lot of blood sweat and tears to get that damn bottom memory stick out.  I put the old Apple memory back in, turned it on, and got a white screen with a flashing question mark--Apple's equivalent of the blue screen of death, indicating there's a serious hardware problem.Long story short is that google suggested that the data cable in these MBP 2010s is prone to failure if at all stressed, so I bought one, along with a hard drive enclosure to test my original drive.  Sadly, although the hard drive worked outside the computer in an external enclosure (using the original Apple memory inside), it didn't work inside the laptop (nor did a brand new drive) and the new data cable didn't fix anything.Since the new data cable did nothing, and the drive worked externally, the most likely conclusion was that it's a problem with the logic board, which is next to the memory slots and probably somehow sustained damage through flexing or breaking of soldered connections when I struggled to get the non-functioning, too-thick,  ill-fitting Corsair memory out.A logic board replacement is in the $500+ range, and I don't want to invest a lot more in my aging laptop, so I'm stuck with a computer that works only if the hard drive is in an external enclosure....not very handy, since my laptop now has the mobility profile of a desktop :(So all told, I ended up spending a significant amt of $ on 2x4GB of this Corsair memory, plus $100 on additional parts + $50 to buy memory that actually worked (OWC) and now I'm out $200 total and have a crippled computer...all because I bought this crappy memory.  I suspect that the good 2010 Macbook reviews for this product come from people who (1) did not get a lemon in their memory order and (2) NEVER had to remove the Corsair memory after they installed it.Is it worth the risk to save $10 on Corsair vs. buying a more reputable brand?  Your call, but based on my very unhappy experience, losing significant time investigating the problem and installing / uninstalling parts, wasting $, experiencing a lot of headache and gnashing of teeth, and also crippling my computer, I'd give  that a big NO NO NO NO NO NO NO.If you have a 2010 Macbook Pro (or any similar model), AVOID THIS PRODUCT!!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    More speed! I recommend it.
  

*by J***N on Reviewed in the United States on July 18, 2016*

I wish I had bought this sooner. I was running my  mid 2009 Mac Book Pro on just the 2 gigs of ram it came with and it was starting to become a major source of stress. My Mac Book Pro holds a maximum of just 8 gigs of ram so I had planned on buying two of these 4 gig sticks but decided to just get one for now and try it out first. I had two, one gig sticks installed so I popped one out and and put the new four gig in its place, bringing me to a total of 5 gigs. Removal and installation is super easy, I think just about anyone can do it so save some money and do it yourself. There's plenty of guides on the Internet that will walk you through it, ifixit.com being the best. The 5 gig increase has worked wonders for me, so as soon as I order my second stick I'll be really zippin. 8 gigs max sounds silly considering the amounts of stock ram shipped with computers today but if 5 gigs has already worked great then the maximum of 8 that I can install will be fine and I even consider myself to be a "power user"

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great performance upgrade for your macbook.
  

*by R***H on Reviewed in the United States on April 13, 2015*

Okay for help with people understanding compatibility my macbook is A1342 13in White Polycarbonate 2.26ghz Intel C2D. I originally had the factory 2gb (2x1gb) i pulled them both out. Put the 4gb in the bottom slot and one of the 1gb in the top slot; i'll be buying another 4gb soon. And it is recommended that you have matching RAM for increased performance. But even so. From 2 to 5gb feels better especially loading apps. but being as yosemite is a little rough to run i plan on installing a SSD which is what i'd recommend to anyone looking to increase performance on an older macbook. Retina Display macs have flash storage so thats why they're still so snappy.

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-04*