Previous 1 2 3 4 Next 237 Replies Latest reply: Oct 22, 2009 2:09 AM by FerryA1 Go to original post
  • jtokash Level 1 (0 points)
    Last night I ran the MacBook in two configurations:

    Config 1: One of the new sticks in the bottom RAM slot, the other slot empty.
    Config 2: The other new stick in the top RAM slot, the other slot empty.

    I did this to try to find a problem with one or both of the individual sticks (or one of the slots), but both performed fine.
  • blues tank Level 1 (0 points)
    I have bought crappy RAM from Fry's before that I had to return like 2x before I finally got some that didn't crash my laptop.

    That was for a PC though
  • y_p_w Level 4 (3,550 points)
    jtokash wrote:
    I don't see a brand name. There is an M symbol with a slanted oval around it... Maybe that's the manufacturer's logo?

    Micron Technology of Boise, Idaho.

    Samsung will either say SAMSUNG or SEC. Hynix has their name on their logo. I'm not sure what Qimonda's logo looks like. I think Apple might even use Elpida.
  • jtokash Level 1 (0 points)
    I returned the RAM and will probably buy the crucial online at some point. I'd rather buy local so the exchange process (if necessary) is smoother, but it looks like that's not an option.
  • Mattc867 Level 2 (190 points)
    I was looking into upgrading my RAM recently and from the stuff I read people made it sound like the MAC OS is really picky about RAM chips. I was told to specifically buy RAM marked as "Mac Compatible" on another forum. To me it seems like RAM should be RAM and that it wouldn't matter, but others seem to disagree...
  • mmike70 Level 2 (315 points)
    How long did it take your macbook to crash after a reboot with the 4GBs in?

    I'm having the same issue with the 4GB RAM kit from OWC and mine freezes after about 7 hours, never less. It's crashed under all conditions, under load or no load, ac or battery. Last two times it froze there was graphical corruption on screen but the previous 5 or so things just stopped, no pinwheel. 4 hours of running memtest checked out perfectly and there's no evidence of a kernel panic in the system.log file or on screen. Resetting the PMU and PRAM had no effect either.
  • mmike70 Level 2 (315 points)
    My 2.4 came with samsung.
  • jtokash Level 1 (0 points)
    It varied, but I got it down to a set of tests that will get it to crash in an hour or less.

    Basically, all at the same time: QuickTime running with a video (or four), YouTube playing (create a playlist and run that), a large (multi-GB) copy operation from one place on the local hd to another on the local hd, GrandPerspective analyzing the hard drive, a few large simultaneous network downloads, run visualhub to convert a video - run all of that while the screensaver is also running - mine was the photo slideshow (with pan/zoom) screensaver. Often, many of these operations would complete before the crash, but I think some of that activity is useful for speeding up the process of reproducing the problem.

    I could not reproduce the crash when I booted from a USB hard drive. Run all of that stuff from your local HD.
  • mmike70 Level 2 (315 points)
    Ok, thanks for the info. I've been running handbrake, fusion w/ server 2008 (2GB alloc), quicktime, google earth, etc but never had it lock up in less than 7 hours.

    I'm trying out a second batch of memory from OWC right now @ almost 7 hours of uptime and so far so good as I'd expect. We'll see how it goes.

    Just looked at the link in your original post, and the ram you got is exactly the as the memory OWC is selling.
  • mmike70 Level 2 (315 points)
    I'm at 23 hours uptime now and everything is still running smooth which is a new record by 14 hours. I'm hoping I just got unlucky with the first batch of memory.
  • Jesse Guerrero Level 1 (0 points)
    I purchased patriot ram 2x2gb kit from frys. My MB aluminum has been crashing randomly. I would suggested taking that memory back, i did.
  • gpotts Level 3 (585 points)
    I bought the OWC 2X2GB kit. I've been having crashes too mainly with watching Flip4Mac streams.

    I've been using the Apple Hardware test looping all night and it hasn't found any trouble with the RAM. I'm going to put my original 2 GB back in and see if it works. Then I'll have to get replacement chips from OWC.
  • HapMan Level 1 (0 points)
    I'm getting the same symptoms - hangs when doing large processes (mostly in SuperDuper, transferring large amounts of data) but it has happened in various places on the OS.

    I, do, however, have Apple Branded RAM that I purchased when I ordered the machine.

    I'm pretty frustrated at this point as the machine has crashed probably about 15 times requiring a force power down each time. (I've also had one kernel panic when working in iPhoto.)
  • jgmdean Level 1 (30 points)
    There appears to be DDR3 RAM out there with at least different CAS. I've seen 7 and 9. It might be an idea to check the timing specs on the original stick's chips and make sure any upgrades match or exceed.

    Interestingly Crucial's site is giving an error for the MacBook late 2008, but the MacBook Pro late 2008 takes you to the correct DDR3 parts. AFAIK the new Macbook and the new Macbook Pro take the same DDR3 SO-DIMMs.

  • JDTech12308 Level 1 (0 points)
    I have upgraded my new MacBook with the OWC 4GB package. Since I have experienced a total system freeze about 6 times. It has occurred when watching video both ripped video with Quicktime and a DVD. The first time I had other programs running so I tried closing all programs and still had freezes. It's strange though because it doesn't always freeze up. Last night I it froze after 10 minutes, I restarted and had no freezing for over 2 hours.

    I am thinking about putting the original ram back in.
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