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  Tom's Hardware UK and Ireland Forums » Overclocking » General Discussions » CPU overclocking voltage question
 

CPU overclocking voltage question

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Methase
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n°1762906
06-23-2008 at 03:52:31 PM

Hey guys,

I have an issue w/ overclocking my e8400. I wanna try to get it to 4ghz, and I saw that with upping the voltage to about 1.4, this is easily possible. I have a good CPU cooler, along w/ some nice case fans, so I don't think heat will be an issue.

Anyways, I have the mobo voltage on auto now when its at 3.6, and there is a lot of voltage differences. The BIOS says 1.36, nTune says 1.594, and CPUZ says 1.225. When I change the voltages manually, the BIOS reading changes to 1.4, but when I open nTune is says 1.015, and CPUZ remains the same at 1.225.

Any advice or past experiences to this?

Thanks in advance.

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ausch30
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n°1762907
06-23-2008 at 03:59:38 PM

Is it stable at 3.6, have you run Orthos for 12-24hrs?


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Methase
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n°1762908
06-23-2008 at 04:02:35 PM

Yeah, actually I have it at 3.7 stable right now, and I use BOINC to max out my processor and yes, I have run it for about 24 hours and its stable.

ausch30
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n°1762910
06-23-2008 at 04:41:41 PM

The only voltage I really trust is the BIOS voltage. I have a lot of programs that display voltages and they all seem to have something different.

right now I'm running Orthos and I have my voltage manually set at 1.2 I think but HW monitor has 2 vcore readings and 1 is 1.15 while the other is 1.06 and CPUZ has it at 1.48. The funny thing is that both programs are from CPUID so you would think the readings would be the same.

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Message edited by ausch30 on 06-23-2008 at 04:46:14 PM

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Evilonigiri
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n°1762916
06-23-2008 at 05:45:42 PM

ausch30 wrote :

The only voltage I really trust is the BIOS voltage. I have a lot of programs that display voltages and they all seem to have something different.

right now I'm running Orthos and I have my voltage manually set at 1.2 I think but HW monitor has 2 vcore readings and 1 is 1.15 while the other is 1.06 and CPUZ has it at 1.48. The funny thing is that both programs are from CPUID so you would think the readings would be the same.


I trust HWMonitor and CPUz, but its weird how yours don't match. Make sure you have the latest versions of both with the latest bios. Whatever the case, the bios voltage is usually a higher because it doesn't take in Vdrop and Vdroop.


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