Home > Reviews > Corsair 8GB SODIMM Mac Memory Kit (CMSA8GX3M2A1066C7)

Corsair 8GB SODIMM Mac Memory Kit (CMSA8GX3M2A1066C7)

5 Stars- techdad

Corsair mac memory


Does your Mac only have 4GB of RAM? Upgrading the memory in your system is still one of the quickest and easiest ways to boost its performance. Buying it from a memory company instead of Apple will save you TONS of money. Though, unlike high performance desktop memory, there aren’t as many distinguishing factors when considering which SODIMM to buy. Pretty much all the major manufacturers have similar stated performance specs, so why would you choose Corsair’s Mac Memory Kit over the others?


  • Great price
  • Tested at Apple’s compatibility lab
  • Proven reliability
  • Excellent support
  • Lifetime warranty


  • Hard to remove from packaging

Corsair Mac Memory Packaging


Installing the Corsair Mac Memory kit in a 15-inch MacBook Pro was quick and easy, though I struggled a little bit trying to remove the modules from the plastic packaging. The memory was immediately recognized by OS X and everything ran quickly and smoothly. Rember verified the memory size, type and speed.
Rember RAM details

The Corsair kit also passed memory tests with flying colors.

Rember test pass


The timing for the CMSA8GX3M2A1066C7 is 7-7-7-20, which is the same as the kits offered by the other manufacturers. So then why would you consider the Corsair memory kit over the others? The most obvious is price. The Corsair kit has a very competitive street price. Did you know that Apple charges $400 for an 8GB memory kit?!

What might be less obvious is that the Corsair kit has been tested at Apple’s compatibility lab. This ensures that the memory you buy has actually been tested to work with Apple’s products. Though I’m sure that kits by other manufacturers have been tested for compatibility, the fact that Corsair went through the trouble of testing their memory at Apple, provides extra peace of mind and tells me that Corsair is willing to go the extra mile for their customers.

Additionally, Corsair’s top notch support is always something to consider. Sure, like Corsair, many memory makers provide lifetime warranties, but how good is their support and how simple is the RMA process? If your Corsair memory goes bad, getting a replacement takes just a few short steps and their turnaround time is very reasonable. If you’re in a hurry, you can even request an advance replacement (provided that you give them a credit card #, just in case you don’t return the defective memory).


Density 8GB (2x4GB SODIMM)
Speed 1066MHz (PC3-8500)
Timing 7-7-7-20
Type DDR
Pins 204
Voltage 1.5V
Warranty Lifetime



You can buy memory for your Mac from anybody, but why would you? You’d might as well get it from a company known for high-performance, reliable memory, who actually tested their memory at Apple’s lab. The 8GB Corsair Mac memory kit is a terrific value and I recommend it to anyone looking to maximize their Mac’s performance without sacrificing reliability or top notch support.

Available from Amazon.com.

* Review unit provided by Corsair.

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  1. Don
    March 4th, 2013 at 11:29 | #1

    Will mac memory work in a pc?

  2. Boris
    January 19th, 2013 at 09:02 | #2

    For the 2nd time I had to go back to my retailer to swap this product since none worked for me – 1st was 1333 2nd 1066 (Mid 2010 Macbook pro). Not sure I’m buying any Corsair product anytime soon …

  3. Gianni Carlo
    January 16th, 2013 at 02:08 | #3

    I recently bought this product and couldn’t get it to work with my mid-2010 MacBook Pro. After chatting with Corsair I discovered that there are 2 versions of this product. Originally the IC density (the number of black rectangles on the sticks) per stick was 8 x 512 MB. It turns out this is more than MacBooks, at least of 2010 and older, can handle. So Corsair updated the product to have 16 x 256 MB ICs (as you can see pictured above in the review). Basically the issue reduces to: my retailer had old stock. If you buy this product, have an “older” MacBook and kernel panics after installing it check the IC density and chat with Corsair directly if it’s too high; they’ll send you a compatible replacement.

  4. Ed
    July 27th, 2012 at 00:47 | #4

    I can definitely understand your frustration, since bad RAM can be difficult to troubleshoot and identify. My wife has been running the Corsair kit on her MacBook Pro at work and hasn’t had a single problem (knock on wood). And she uses it for 10-12 hours a day. When I can, I’ll ping Corsair and see what I can find out.

  5. wendyjo
    July 20th, 2012 at 17:46 | #5

    I am having this same issue..
    macbook pro 10.7.4 lion
    random kernel panics
    corsair warranty is fine as they are paying shipping both ways, but i’m now waiting on my 2nd replacement of corsair ram (which means 3rd pair, of 8gig each sticks)

    i am frustrated because memory tests run clean, so I can’t understand why/how this is happening..
    can someone give me some technical insight ?


  6. EricTheRed
    January 1st, 2012 at 19:32 | #6

    There is a lot of people experiencing the same problems with this faulty memory. Read up on any popular site and you will find users dealing with random crashes.

    Corsair needs to fix this product or recall their recent batch because this is just causing a lot of stress for both seller and customers.

    Why continue to promote and produce a faulty product when you’re just going to ruin your creditable along with losing money on fixing the memory kits.

  7. Ed
    December 10th, 2011 at 14:00 | #7

    That seems unusual to me, but I’m sure if you get in touch with Corsair, they’ll RMA it for you both, no problem.

    Good luck!

  8. Raphael
    December 10th, 2011 at 13:46 | #8

    I’ve the same problem that Tito 🙁 I’m even having some random crashes 🙁

  9. Tito
    November 13th, 2011 at 09:01 | #9

    too many “0” US$80

  10. Tito
    November 13th, 2011 at 09:00 | #10

    sorry, loose US$800 i mean

  11. Tito
    November 13th, 2011 at 08:59 | #11

    Yes, my 4Gb is pass all tests
    arghh…i loose my US$500 for 8Gb

  12. Ed
    October 31st, 2011 at 23:38 | #12

    @Tito Have you tried running the test on your old memory? Does it pass OK? Have you tried to exchange the Corsair RAM?

  13. Tito
    October 31st, 2011 at 20:09 | #13

    Yes, I get the same results in every test. Now i change my memory back, to my 4Gb.

  14. Ed
    October 23rd, 2011 at 21:23 | #14

    @Tito Do you get the same test results every time? I would either try to exchange it from where you purchased it, or contact Corsair support. You can contact them at http://www.corsair.com/support. I’ve never seen Corsair memory fail, but I’m sure it happens from time to time. Good luck!

  15. Tito
    October 23rd, 2011 at 19:33 | #15

    This is the result from my test. What should i do?.

    Memtest version 4.22 (64-bit)
    Copyright (C) 2004 Charles Cazabon
    Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)
    Licensed under the GNU General Public License version 2 only

    Mac OS X 10.6.8 (10K549) running in multiuser mode
    Memory Page Size: 4096
    System has 2 Intel core(s) with SSE
    Requested memory: 6698MB (7023591424 bytes)
    Available memory: 6698MB (7023591424 bytes)
    Allocated memory: 6698MB (7023591424 bytes) at local address 0x0000000101000000
    Attempting memory lock… WARNING: Testing with unlocked memory may be slower and less reliable

    ERROR: Memory lock failed – reason unknown.

    Partitioning memory into 2 comparison buffers…
    Buffer A: 3349MB (3511795712 bytes) starts at local address 0x0000000101000000
    Buffer B: 3349MB (3511795712 bytes) starts at local address 0x00000001d251c000

    Running 2 test sequences… (CTRL-C to quit)

    Test sequence 1 of 2:

    Running tests on full 6698MB region…
    Stuck Address : setting 1 of 16 ok
    Linear PRN : setting 1 of 16 ok
    Running comparison tests using 3349MB buffers…
    Random Value :  ok
    Compare XOR :  ok
    Compare SUB :  ok
    Compare MUL :  ok
    Compare DIV :  ok
    Compare OR :  ok
    Compare AND :  ok
    Sequential Increment:  ok
    Solid Bits : setting 1 of 64 ok
    Block Sequential : setting 1 of 256 ok
    Checkerboard : setting 1 of 64 ok
    Bit Spread : setting 1 of 128 ok
    Bit Flip : setting 1 of 512 ok
    Walking Ones : setting 1 of 128 ok
    Walking Zeroes : setting 1 of 128

    FAILURE! Data mismatch at local BUFA address 0x00000001bf7cff58, BUFB address 0x0000000290cebf58
    BUFA Data: 0x0000000000000004, BUFB Data: 0x0010000000000004

    Test sequence 2 of 2:

    Running tests on full 6698MB region…
    Stuck Address : setting 1 of 16

  16. Ed
    August 30th, 2011 at 10:35 | #16

    @Tobias You’re very welcome! I think you will be very happy with it. Just be very careful when removing the memory from the packaging. I tried to pop one memory chip out and it literally flew two feet into the air. Luckily, I caught it on the way down. Thanks for reading and take care!


  17. August 28th, 2011 at 13:15 | #17

    Thank you for that nice suggestion.
    I also ordered this 8gb kit for my MacBook pro 13″ (mid 2010), but still wait for it.

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