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Overclocking 1075T, can't reach 4ghz

post #1 of 26
Thread Starter 
I can't seem to raise the CPU voltage with my 1075T and Gigabyte 880GM-UD2H to get that magic 4ghz. It's currently stable at 3.9 with stock volts, but I have no idea how to raise the volts properly to get that extra 100mhz. When I try to raise it it shows the normal CPU voltage and a completely random voltage next to it.

Current bios setup: http://img829.imageshack.us/i/sany0056c.jpg/
Default Voltages: http://img813.imageshack.us/i/sany0057.jpg/
Result when I change voltage: http://img198.imageshack.us/i/sany0058q.jpg/

Any help would be fantastic tongue.gif
    
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post #2 of 26
The VCore is the voltage that you want to raise.

The greyed out 1.475 is the normal voltage and if you raise the "CPU Voltage Control" you will be able to raise the "completely random" (although not random at all) voltage value that is greyed out.

Make sure you do not damage or kill your chip by over-volting it. Also 100MHz is going to make little performance increase.
 
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post #3 of 26
Thread Starter 
I don't understand how +0.025V to 1.475V = 1.325V.

Do I have to make the voltage on the right higher that the standard voltage?
    
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post #4 of 26
Does the greyed out 1.325v change as you change the voltage control?
 
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post #5 of 26
Thread Starter 
Quote:
Originally Posted by GerroffMe;12994418 
Does the greyed out 1.325v change as you change the voltage control?
The volt on the right changes, but not corresponding to the extra volts that I give it. For eg, when I give it 0.100 volts the voltage on the right is 1.3000.

I'm really confused.
    
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post #6 of 26
Well, first things first, you can start by fillin the info of your system, this would help.
Second: Keep the hypertransport (HT) @ 2000mhz, anything over it just causes instability problems; lower your ram speed to the default speed or lower.
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post #7 of 26
It doesn't really matter that it doesn't correspond how you imagine it would, just up it gradually until it reaches stability. You are just adding millivolts on top of the current VCore.

Monitor the Vcore using HWmonitor, download it here.
 
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post #8 of 26
Well the voltage at the bottom (the grey one) is the voltage the MB uses when in auto (and i consider 1.47 too high, i will not go over 1.45v on a PII chip) and when you turn the control to manual then the voltage given to the cpu is the one on the left not the grey one.

Check if there ie a Bios update for your board since it seems like it is giving too much voltage to the cpu when in auto.
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post #9 of 26
Thread Starter 
Quote:
Originally Posted by Ivan TSI;12994529 
Well the voltage at the bottom (the grey one) is the voltage the MB uses when in auto (and i consider 1.47 too high, i will not go over 1.45v on a PII chip) and when you turn the control to manual then the voltage given to the cpu is the one on the left not the grey one.

Check if there ie a Bios update for your board since it seems like it is giving too much voltage to the cpu when in auto.
Mobo is running latest bios. When I change the FSB to 267 for my desired 4.0ghz it'll boot, but crash when I run Prime95. Upping the voltage will just make the PC not boot, it'll just get to the bios, tell me that there's been an error with overclocking and reset my settings.
    
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post #10 of 26
Could be your RAM or the HT they are way too high, when you overclock using the FSB it will overclock your CPU-NB, HT and RAM at the same time,then you have to manually lower them back to stock to eliminate that as the reason of the instability.
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