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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

Macbook + 4GB Problems


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Cheetah05

 
Member Since: Aug 03, 2009
Posts: 37
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Hi there,

I upgraded my Macbook to 4GB a while ago and I seem to have problems with it when all 4GB is installed.

Everything I download from the internet gets corrupted (or when I try to extract large files they get corrupted - could be either one or both). We are talking maybe 500MB+ files from split archives. This only started happening after about a week.

When I tried to upgrade to Snow Leopard it always failed with 4GB in but when I removed 2GB and left one stick in there it installed fine.

This is the RAM I upgraded to: Corsair 4GB (2x2GB) DDR2 PC2-5300C5 200-Pin SODIMM Dual Channel (VS4GSDSKIT667D2).

Is this a known problem or just an issue with my Macbook?

My Macbook was purchased in April 2009 and has this model number: MB881B/A

Thanks.
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dsi

 
Member Since: Sep 26, 2009
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i thought Mac uses DDR3 in newer models... isn't it?
My MBP uses 2x DDR3 2Gb... a total of 4Gb, and have no problem with it.
Or is it because yr's a MB and mine is a MBP? does this make any difference?
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Q8Faisal

 
Member Since: Dec 30, 2009
Location: kuwait
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Mac Specs: macbook aluminum late 2008,2.0 processor,160GB hard drive,4GB ram,snow leopard 10.6.2

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yeah thats right , you should check first in the system profiler about your DDR , is it DDR3 ? or DDR2 ? , i upgrade my macbook from 2GB to 4GB , i buy it from crucial.com , the amazing thing in that website is the adviser a small program you install it then he will check your system and give you the advice
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Cheetah05

 
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Its definitely a DDR2 model. 100% sure on that.
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clayneal

 
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Member Since: Mar 27, 2009
Location: Lincoln Nebraska
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A search by model # shows yes it is a DDR 2 machine. If it were me I would do a little trouble shooting to find out if you have a bad stick of ram/ a bad ram socket / logic board trouble.

Does it matter which 2 gig stick you leave in ? Does it matter which socket that stick is in ? You can see where I am going with this. Check this out and report back.

Hope this helps
clay

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Cheetah05

 
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Have already spent a whole day doing all that.

Ran the apple test with both sticks in, and each stick in either socket, no errors returned.

Could install snow leopard with either stick installed.
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idirtbike

 
Member Since: Dec 12, 2009
Location: New York
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Mac Specs: Unibody MacBook /intel core 2 duo/ 2GB RAM/250GB HD/Snow Leopard...iPhone 4 (:

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dude i have the MacBook unibody new white one, and before that i had the MacBook unibody Aluminum and i know both of them took DDR3 so if you put DDR2 in that is most likely your problem.
hope this helps
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Cheetah05

 
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I took DDR2 out and put DDR2 of the same speed in.
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clayneal

 
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Quote:
Originally Posted by idirtbike View Post
dude i have the MacBook unibody new white one, and before that i had the MacBook unibody Aluminum and i know both of them took DDR3 so if you put DDR2 in that is most likely your problem.
hope this helps
Dude the model MB881B/A ( which the op stated ) shipped with and uses ddr2 667 MHz ram

clay

MY ADVICE COMES WITH A DOUBLE YOUR MONEY BACK GUARANTEE!
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