Computer keeps freezing/restarting if I don't underclock my CPU, need help

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Beelzejow

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Jul 21, 2013
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10,510
I recently built my own cheap computer from various components, the specs are as followed:

Intel Core 2 Duo E8400 3GHz
Nvidia Geforce GTX 460 1GB
4GB DDR2 6400/800
PSU: 650W ATX Lead Power
MOBO: ASUS P5B SE
Windows: 7 Home Premium

I originally had a 500W ATX PSU and could not run my CPU at 3GHz without a BSOD occurring at start up, I could only get to about 80% of its maximum power before a BSOD occurred, so I recently upgraded my PSU to 650W, thinking this would fix the problem, but nothing has changed. I'm really stumped as to why I cannot run my CPU at normal levels. Temperatures are fine and I have no issues with overheating, in case any of you were wondering. Thanks for your time!
 
Solution
teh_gerbil
Haha, under the FAQ:

http://www.asus.com/Motherboards/P5B/#support_Knowledge_BB542EC4-859E-799C-54E9-134CAC600E4A

"As Intel specification clearly states Vcc (CPU Vcore) should drop in propotonal to the increase of Icc (CPU current consumption), in order to prevent causing permanent damage to your CPU. When CPU is under stress (in other words, under higher load), the current consumption of the CPU will go up, and the CPU Vcore will then drop to conpensate this change. This is a perfectly normal behaviour, and will not effect the overall stability of your system."

Add an unstable system to begin with, and a volt drop would cause BSOD issues like a boss.

And yes, that is the feature you're after...
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Beelzejow

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Jul 21, 2013
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10,510


I already checked temps via HWMonitor. How do I feed my CPU more power?
 
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teh_gerbil

teh_gerbil

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Apr 9, 2012
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Haha, under the FAQ:

http://www.asus.com/Motherboards/P5B/#support_Knowledge_BB542EC4-859E-799C-54E9-134CAC600E4A

"As Intel specification clearly states Vcc (CPU Vcore) should drop in propotonal to the increase of Icc (CPU current consumption), in order to prevent causing permanent damage to your CPU. When CPU is under stress (in other words, under higher load), the current consumption of the CPU will go up, and the CPU Vcore will then drop to conpensate this change. This is a perfectly normal behaviour, and will not effect the overall stability of your system."

Add an unstable system to begin with, and a volt drop would cause BSOD issues like a boss.

And yes, that is the feature you're after.
http://dlcdnet.asus.com/pub/ASUS/mb/socket775/P5B/e2620_p5b.pdf

According to this, using precision tweaker you can adjust Vcore at 6.25mV increments. Try 1 at a time, boot and see how stable she is.
 
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Solution
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Beelzejow

Honorable
Jul 21, 2013
9
0
10,510


I see, but one question: Is Precision Tweaker a program I need to download or should it be in my BIOS already? I haven't seen it in my BIOS, so far.
 
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