Bad RAM from OWC

Discussion in 'Mac Pro' started by Velin, Feb 12, 2011.

  1. Velin, Feb 12, 2011
    Last edited: Feb 12, 2011

    Velin macrumors 65816


    Jul 23, 2008
    Hearst Castle
    Just had a second stick of OWC RAM fail on my 2008 Mac Pro. First stick failed just after a year of purchase. This next stick failed within two years, just happened right now.

    I bought all the RAM at once, this latest failure is a 2 gig stick -- and when one goes, you can't then use the other one due to the matched pair requirement. Wonderful.

    Yes, I know it's the RAM. On a cold boot or restart, I got the rapid blinking light near the power button and the fan blows at high speed. That rapid blinking light is classic bad RAM indicator. As further proof, I removed the OWC RAM. Then I rearranged the stock RAM, one stick up one stick down as per Apple's pairing instructions. Mac Pro then boots right up, no problems with the OWC RAM removed.

    Not buying any more OWC RAM, multiple failures now within two years yet the stock RAM, no problems. Waste of hundreds of dollars.

    So any suggestions? I assume its out of warranty, yes? I may try Crucial next.

    Edited to add: here's the diagnostic report:

  2. Velin thread starter macrumors 65816


    Jul 23, 2008
    Hearst Castle
    Darn I threw out the one bad 4 gig stick. Almost not worth it for the 2 gig sticks. But thank you for the reference, this is good information for anyone else who has this happen.
  3. CaptainChunk macrumors 68020


    Apr 16, 2008
    Phoenix, AZ
    Just FYI, most of the reputable memory manufacturers cover RAM modules with lifetime warranties.
  4. derbothaus macrumors 601


    Jul 17, 2010
    Yep. OWC and crucial are pretty fantastic at replacement. Just keep replacing till you get a good kit. Or realize after 4 kits that your saddles are bad:)
  5. Honumaui macrumors 6502a

    Apr 18, 2008
    had a OWC fail sometime after I bought it ? was for the Mac 1,1 when it first came out the glue they used on the heat sync let go ?
    they replaced it no problem
  6. MattDSLR macrumors 6502

    Jan 23, 2011
    I just ordered 8 x 4 gig 1333 sticks from there
    hope to not have any problems with it
  7. Honumaui macrumors 6502a

    Apr 18, 2008
    I would not worry ? they are usually very good and returns wont be a issue

    its them or transintl or crucial so pick one and you take the same chances very very rare it happens but like anything it can happen this is why I tend to buy from good legit companies even if its a few bucks more :)
  8. strausd macrumors 68030

    Jul 11, 2008
    If your signature is correct and you have an 8-core MP, why did you get 1333 MHz RAM? I thought the MPs with hexacore CPUs were the only ones that could take advantage of 1333 MHz.
  9. linuxcooldude macrumors 68020

    Mar 1, 2010
    I Just put in 24Gigs ram from OWC in MacPro. I just used it for one day so far. They do have an excellent replacement policy. I think its rare problem that happens to a small percentage of people.
  10. mrt209 macrumors 6502

    Nov 21, 2010
    In case he upgrades the CPU in the future.
  11. philipma1957 macrumors 603


    Apr 13, 2010
    Howell, New Jersey
  12. gpzjock macrumors 6502a

    May 4, 2009
    OWC are not the only ones that have RAM failures.

    Bought 2 sets of 8 GB from Memory America:
    1 stick went bad in the first set after about 16 months and they replaced the whole set for free. Another stick went bad in the 2nd set about 3 months later and they replaced the whole set again but this time I paid delivery and UK import tax. Lifetime warranties are great, peace of mind is worth the small cost of RMA replacement.
  13. wonderspark macrumors 68040


    Feb 4, 2010
    I have 4x4GB sticks from OWC, running great every day since December 2009. When I first installed, one of the sticks was bad. I called and got four more sticks sent to me (very fast delivery!) and used the 3x4GB in the meantime. Got new sticks, installed, and they were great, so I returned the other set. Been great since!

    I think OWC has remarkable service, personally.
  14. Phantom Gremlin macrumors regular

    Feb 10, 2010
    Tualatin, Oregon
    Mac Pro is a great machine to use with bad memory

    The Mac Pro is the only Apple box that uses ECC memory. So that means there's about a 99% chance that the hardware will correct a memory error (or tell you about it if it can't).

    Any other Apple computer will simply crash with flaky memory.

    So, to me that makes it worthwhile to "risk" buying third party memory, at least from a highly regarded supplier. You have memory checking by the hardware, and you have a guarantee from the vendor.
  15. gugy macrumors 68030

    Jan 31, 2005
    La Jolla, CA
    I had issues in the past with their memory but they have always being good at replace them without trouble.
    I keep buying from OWC just because of that. They are a quality vendor and I think they have a reputation behind their products.
  16. myosh macrumors member

    Jul 24, 2002
    Bought a total of 12 GB of RAM from OWC back in 2006 for my MacPro 1,1 (4 x 1 GB and 4 x 2 GB, 8 sticks total) and it ran great for the 5 years I owned the machine.

    I recently upgraded to the 3.33 Hex and I went with OWC again for 3 x 4 GB 1333 MHz DDR3 RAM. On the initial boot, my Mac only saw 8 GB so I shut the machine down, swapped RAM in slots 2 and 3 and rebooted. This time (and ever since then), my Mac sees the full 12 GB of RAM. I guess I didn't seat the RAM in the slot properly. This is something I'll keep in the back of my mind incase I get a RAM failure.. *crosses fingers* :)
  17. sauria macrumors regular

    Jul 2, 2001
    Texas, USA

    Velin, did they replace it? Thank you. I just had the same problem.
  18. nambuccaheadsau macrumors 65816


    Oct 19, 2007
    Nambucca Heads Australia
    Great service from OWC who have a lifetime warranty on their memory. Had one stick of a matched pair fail after fourteen months. Emailed them at OWC and received information on getting the memory back to them with a job number on the parcel.

    Received two new modules by air mail within seven days at no charge.
  19. USAMacUSer macrumors newbie

    May 11, 2012
    This is a somewhat old thread, but I just found it, because I just had the 8GB of RAM (2x4GB) modules in my Mac Pro fail *again*. I've already had them replaced once before under OWC's lifetime warranty.

    Let's face it, a lifetime warranty is of little or no value really if your system is constantly having memory failures. OWC's policy is that you have to wait for them to send you an RMA number, then you have to mail the memory back to them, and then finally, they will mail you replacement RAM. In the meantime, you're down, or running on less memory than usual.

    This is a mac pro, used for serious work, and losing 8GB of RAM makes it almost into a boat anchor. The original Apple system RAM is still working flawlessly however, but it's only 2GB, which is very painful for large applications, especially when you're doing more than one thing at a time (typical on an 8 core system).

    I decided to throw in the towel, and just go buy some from Crucial instead. I don't think there are very many suppliers for ECC RAM, and whoever OWC uses, is less than stellar at it.
  20. sauria macrumors regular

    Jul 2, 2001
    Texas, USA

    Thanks for the update. There is a chip on these that runs at 4 GHz. Might explain the heat and the failure rate?

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