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Phenom II X4 940 Overclocking Issue!

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December 3, 2010 12:58:16 PM

I recently upgraded my CPU from an Athlon X2 5200 to a Phenom II X4 940. I Also got a Corsair H50 to cool it. Whenever I overclock the my comptuter either BSOD's or the computer crashes before Windows Boots. I have tried the most minor overclocks and also high overclocks. The highest I was able to boot into Windows was 3.4ghz but when I ran Prime 95 within 15secs it BSOD's. I have tried to up the voltage and still its continues to freeze. I was thinking that my RAM was causing that to happen but I am not sure. What should I do?
a b K Overclocking
December 3, 2010 2:28:45 PM

If you haven't already, slap your old CPU in and walk through upgrading your BIOS. You board supports AM2+ processors, but may require an update for the Deneb class (the Phenom II x4 940).
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December 3, 2010 7:08:08 PM

i upgraded the bios before
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December 7, 2010 9:28:42 PM

I think the Core is defective. I'm gonna get it replaced most likely.
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a b À AMD
a b K Overclocking
December 8, 2010 12:47:36 PM

Did you lower the RAM multiplier before increasing the frequency?
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December 9, 2010 7:18:05 PM

I increased the memory from 800 to 1066. And the phenom @3.2ghz, 3 cores fail on Prime95 while the other passes all the tests. I think its either that my motherboard is not supplying enough power to the cpu, its a deffective cpu, or something with the other clocks like Memory, NB, etc
simon12 said:
Did you lower the RAM multiplier before increasing the frequency?

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a b K Overclocking
December 9, 2010 10:41:27 PM

l3xus said:
I increased the memory from 800 to 1066. And the phenom @3.2ghz, 3 cores fail on Prime95 while the other passes all the tests. I think its either that my motherboard is not supplying enough power to the cpu, its a deffective cpu, or something with the other clocks like Memory, NB, etc


drop your memory back to 800(don't need to change mem at 3.2...runing on default800@3.6 ) and just play with multiplier and Vcore voltage ( set up your bios properly )
test your memory before you attempt to OC,in case you missed;
http://www.tomshardware.com/forum/258573-29-black-editi...
http://www.overclock.net/amd-cpus/506756-phenom-ii-step...

EDIT: your PSU is very questionable
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December 10, 2010 1:19:09 AM

I think im gonna send it to get replaced. then do these steps.
ortoklaz said:
drop your memory back to 800(don't need to change mem at 3.2...runing on default800@3.6 ) and just play with multiplier and Vcore voltage ( set up your bios properly )
test your memory before you attempt to OC,in case you missed;
http://www.tomshardware.com/forum/258573-29-black-editi...
http://www.overclock.net/amd-cpus/506756-phenom-ii-step...

EDIT: your PSU is very questionable

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a b K Overclocking
December 10, 2010 1:36:28 AM

try better psu first and memtest86/ core voltage
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December 10, 2010 6:34:40 PM

It can't be the Psu.
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December 10, 2010 9:35:02 PM

I just put the Phenom back in and updated the BIOS. Now only one core stops and the 3 others are still runing. its that fine?
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a b K Overclocking
December 11, 2010 8:37:46 PM

l3xus said:
I just put the Phenom back in and updated the BIOS. Now only one core stops and the 3 others are still runing. its that fine?


No this is not fine,you have to up your voltage more
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December 15, 2010 12:38:19 PM

ortoklaz said:
No this is not fine,you have to up your voltage more

Ok. Im getting it replaced so after i get my new one i will test it.
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