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Memtest passed for individual sticks but errors when all together. Please help stabilize my system. - Page 2

post #11 of 16
11/14/11 at 1:56am
Thread Starter 
The kind of crash I am getting at the moment is a complete shut down of the computer, no freeze, no warning, no bsod, just a simple reboot.
Can this be considered as just instability or does it go beyond the scope of playing with voltages and frequencies?
I have checked temperatures and they are fine all the way, no significant increase.
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post #12 of 16
11/14/11 at 2:03am
Quote:
Originally Posted by metasse View Post

I experience occasional freeze and BSOD's when playing intense game (BF3) so I am trying to fix this problem.
I first ran Prime95 Blend test and got many errors very quickly.
Then I ran Prime95 Small FFT test for 12 hours and got no error. I concluded that my CPU is okay (First question to you: Am I right?)
Then I ran Memtest86+ on all four RAM sticks together and got many errors.
Then I ran Memtest86+ on each individual sticks in their respective slots and they all passed 7 passes with no error.

Your ram seem to be fine. P95 Small FFT only stresses the caches within the CPU. The crashes in P95 Blend but not in Small FFT suggest an instability with the integrated memory controller (IMC) in the CPU.

Since you are running with 4 DIMMS, you may have to increase CPU/NB (IMC) voltage to something higher like 1.30v.
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post #13 of 16
11/14/11 at 10:20am
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OK I did put it at 1.25 but I will try 1.3 V.
Is there anything else I could/should change?
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post #14 of 16
11/14/11 at 11:14am
Quote:
Originally Posted by metasse View Post

OK I did put it at 1.25 but I will try 1.3 V.
Is there anything else I could/should change?

Try lowering the speed of your memory from 1600 MHz to 1333 MHz.
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post #15 of 16
11/14/11 at 1:24pm
  • xd_1771
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I got reboots too when I was unstable.  But that didn't necessarily have to do with the number of DIMMs installed.

You might want to check to see if one of the motherboard memory slots is unstable (it can happen).

If you lower memory speed to DDR3-1333 (this might help), you should lower your timings to at least 7-7-7 to compensate for performance loss.

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post #16 of 16
11/26/11 at 11:25pm
Thread Starter 
I just wanted to post an update for you and thank you for your help and assistance.
After putting my CPU voltage at 1.2V I do not get Prime95 errors.
BF3 still crashed though but after a bit of googling it appears this happens to a lot of stable systems with this game so it might be an unstability problem after all.
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Overclock.net › Forums › AMD › AMD Memory › Memtest passed for individual sticks but errors when all together. Please help stabilize my system.