Errors when using both RAM sticks

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Errors when using both RAM sticks

Hi there,

I'm having a wierd issue with the RAM sticks in my late '11 MacBook Pro.

I was suffering a lot of random kernel panics and decided to do a memory test after reading bad sticks are a prime cause for panics.

This is what happened when I ran the hardware test:

When I run the test on each stick individually it passes, even when I tried different ports thinking it might be a board issue.

When I run the test with both sticks in place I get a MEM error:

4MEM/60/40000000 0x829c2498

Any thoughts on what can cause this?

Thanks!

MacBook Pro, Mac OS X (10.7.3)

Posted on Mar 20, 2013 1:47 AM

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Answer 1

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clintonfrombirmingham

Level 7

30,100 points

Mar 20, 2013 2:14 AM in response to BarakCh

Are these the sticks that originally came with your machine, or did you upgrade yourself?

One thing's for certain - one or both of the sticks is bad.

If they're 'Apple' sticks and you're still under warranty, take your machine to your local Apple Store. If they're third-party, see if you can exchange the RAM.

Just to be clear - this is a set of 204-pin PC-10600 (1333 MHz) DDR3 SO-DIMMs?

Clinton

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Answer 2

Lexiepex

Level 6

14,102 points

Mar 20, 2013 2:18 AM in response to clintonfrombirmingham

I like to add: if you upgraded the Ram yourself, it might be that taking them out and then in again (reseating) correctla will help, but be SURE that the ram has the exact spec.

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Answer 3

BarakCh Author

Level 1

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Mar 20, 2013 3:49 AM in response to clintonfrombirmingham

I upgraded the RAM with two identical sticks - KVR1333D3S9/4G

Is it a poor choice on my part?

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Answer 4

Mar 20, 2013 3:56 AM in response to BarakCh

Is that the Kingston "Value" RAM? Yes, it's a poor choice. Go to either Crucial or OWC and buy the RAM that has the correct specifications for your Mac. Or Corsair (I use Corsair Mac Memory).

Just be certain that you get the correct specs.

Clinton

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Answer 5

BarakCh Author

Level 1

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Mar 20, 2013 3:59 AM in response to clintonfrombirmingham

At least I know what the issue is.

Off to find new RAM.

Thanks for your help Clinton!

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Answer 6

Mar 20, 2013 4:02 AM in response to BarakCh

You're welcome - stay away from 'value' RAM! Corsair sells it as well, but I wouldn't even trust that!

Happy shopping...

Clinton

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