Suitable RAM kits for Aluminium MacBooks

Question for everyone with ram problems. How many of you use HP all in one printers? I am researching a possible cause.

Thanks

I am using the HP C4850 model sold at apple and it is set up to my wireless network. Although, the printer was never on when I switched my ram to Crucial 4gb kit.

PS: I've switched to OWC for two days and everything has been good so far.

This is what worked for me finally:

http://www.newegg.ca/Product/Product.aspx?Item=N82E16820146878

I had originally bought a 2x2GB kit from OCZ that caused video problems with waking from sleep.

If you are having problems with your new RAM test each stick of ram (2GB) by itself in each slot, so you only have 2GB RAM total installed and see if you have problems with a particular slot. I found I only had problems when I had the new RAM, Either stick of 2GB, installed in the lower slot, it worked fine in the upper.

I hope Apple tests this out and releases some sort of patch or firmware update to fix this as there should be no problems with third-party RAM.

I have read in many blogs, that like I said, it doesn't crash in bootcamp (xp or vista) so a firmware update I think that wouldn't solve the problem. It must be son OS X problem.

My kingston RAM never crashed in 10 days using XP SP3 32, but just using a few hours of Leopard.... and the crash came along...

Apple has released a new Leopard version for developers (10.5.7), but there is no sing of any update for this problem....

Someone in another thread suggested this as it worked for him:

edit com.apple.Boot.plist and set the kernel flag:

maxmem=3456

Remember to backup your original com.apple.Boot.plist first before trying.

The problem is that I don't like to change internal things if I don't know exactly what I'm doing...

BTW I haven't bougth 4 gigabytes just to be using... 3. In that case, I would bougth just 2 and let 1 of the originals...

P.D. Excuse my english, I'm castillian.

No problem. I don't like messing with config files either. I was just passing along what someone else did to fix their problem. Did you see if your memory is having problems with just the lower slot?

I have change the maxmem setting (I will let you all know if something changes).

I have read a lot about this problem, and it seems like when Leopard has great amounts of memory (4 GB or more) sometimes it gets quite unpredictable and unstable. I really believe that this is more a problem of OS X than the brand of RAM you are using.

P.D. I hope everything will be solutionated with Snow Leopard. (Because I don't see Apple getting a new macbook firmware...)

Hmm, I'm using the same Kingston kit and I've been experiencing the same problems people are reporting here... Kingston is super cool about RMA, but it's still a pain in the butt to have to do that...

What you're saying makes sense, although it appears that the people who bought Apple RAM do not have this issue... Maybe it's wishful thinking and the issue will come back... That being said, I've got an older (2GHz) iMac which was upgraded to 4GB RAM and OSX is not more unstable than before. Possible, it's the newer RAM speed that is an issue to the OS, but maybe it's just that the 3rd party guys did not receive (or did not adhere to) a comprehensive list of specs. Sun hardware was notorious for not dealing well with non-Sun RAM, maybe it's the same issue here... It sure is a pain though...

I have purchased Kingston KTA -MB1066K2/4G and i had problems. Mac freezes after some use. Black screen with color horizontal lines. I have reclaim with the store and waiting for their response.

I will post the results later...

I have the crucial 2gb kit bought straight from them. ( http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=2E9B2B4EA5CA7304).

Worked fine for about 4 days and then the computer would just freeze randomly. Finally had to pull ram and put in one of the 1GB sticks that came with it and one of the new 2GB sticks. Hasn't froze yet (knock on wood) with 3GB, but I paid for 4GB and that's what I'd like to use.

BTW...this is my first Mac and I've been recommending Apple to everyone because they "just work," yet I cannot even upgrade my RAM without getting the dreaded freezes that I left windows for.

I sure hope this issue is resolved soon.

cs

Kingston KTA ram no problems so farn(one day of use)

I can add my own voice to this long thread. I bought a 13'' unibody MacBook about three weeks ago and decided to upgrade the RAM to 4 gigs. I bought them from Corsair, two chips that specifically said "Designed for Mac" on the label, and I got the repeated glitching that someone posted a photo of early on.

Oddly though (and I didn't see anyone else post this) the glitches ONLY happen in OSX. I dual boot between Vista and OSX and I never had it freeze once in Vista, but it happened repeatedly in OSX.

I explained my problem more on here:

http://forums.macrumors.com/showthread.php?t=694914