Voltage Problems (>_<)

[Teh_Winneh]

Hey everyone!

First and foremost, sorry if this is placed in the wrong part of the forums, but I honestly did not know where else to put it.

I have overclocked my i5 2500K to 4.5GHz at 1.304V. Yet, when I did this in the BIOS, the voltage is actually set at 1.275V. For some unknown reason, some part of my computer is setting my processor voltage higher than I state.

Then, sometimes, when playing games or doing processor intensive tasks, I blue screen. This is because, when I go back into the BIOS, I have massive V(Droop/Drop?) and my voltage goes down to 1.245V, which my processor cannot handle at that overclock.

Basically, what's wrong with my voltages? Is it a problem with my PSU (Corsair HX850W), Processor (i5 2500K), Motherboard (Asus P8P67 Pro) or something else?

Also, is there a way where I can fix the voltages so it always has a VDroop/VDrop?

If it helps at all, I do have the latest 'stable' motherboard BIOS (Version 1204)

Thanks in advance!

***EDIT*** - Oops. It seems like I didn't have the latest version (latest is Version 1502). I'll download it anyway, but I'm not sure if that'll make a difference? Suggestions are still GREATLY welcome (and needed)!

 

[tinytomlogan]

have you got load line calibration enabled?

 

[SieB]

What settings are you using?

changing the load line calibration, duty control and phase control settings will help prevent droop. Also if you have the CPU voltage set to - in offset mode that can cause it as well.

I am running at 4.5ghz on my P8P67 the settings I am using are

PLL voltage - enabled

load line calibration - auto

phase control - extreme

duty control - extreme

with the CPU voltage set to manual @ 1.35v if you have the PRO version you should only need ~1.30v - 1.31v also depending on how your CPU did in the silicon lottery.

I also disabled speedstep and turbo mode under CPU power management for a constant 4.5ghz clock. My volts kick up to 1.36 even though they are set to 1.35 but I have never seen them droop.

 

[Teh_Winneh]

I have the load line calibration on auto, like SieB. Do you suggest setting it to very high or something like that?

I'll try setting the phase control and duty control to extreme and see how that works out, I'll probably post back on Sunday as I'm busy tomorrow.

Thanks for the help, I'll be sure to tell you how I get on!

 

[SieB]

I have the load line calibration on auto, like SieB. Do you suggest setting it to very high or something like that?

I'll try setting the phase control and duty control to extreme and see how that works out, I'll probably post back on Sunday as I'm busy tomorrow.

Thanks for the help, I'll be sure to tell you how I get on!

Try just changing Phase and Duty control to extreme for now and see how it goes if it doesn't work change LLC to very high with Phase and Duty on extreme.

 

[Teh_Winneh]

What I've decided to do is put the LLC on Very High, and set both Phase and Duty control to extreme - If that works for ~ 1 week, then I'll switch LLC to auto and if that works for ~ 1 week, we've solved the problem

Thanks for all the help

 

[Teh_Winneh]

Hey again (You must be getting pretty tired of my posts by now

)

Basically, I got the same problem, even with LLC to Ultra High, Duty Control to Extreme and Phase Control to Extreme.

When the voltage drop happened, I looked into the BIOS and it read at about 1.24V. When I turned off the PSU at the back then turned it back ona gain, the voltages were reading 'normal' again. Could this suggest it's a PSU fault?

Has either SieB, Tom or anyone else got any other suggestions?

Thanks in advance!

 

[SieB]

I'd say up your volts a bit 1.32v maybe and see if it still happens, if it does it sounds like it could be a problem with the PSU maybe the motherboard. Just guessing anyway not 100% sure.

 

[Teh_Winneh]

Thanks for getting back so quickly!

I might try that, but tbh, would adding more voltage affect the likelihood of the event happening? I mean, it could do, but I'm not really sure :X

I'm hoping it's more of a problem with the motherboard because it's affected by the B2 Stepping, so I'll need to get that changed anyway

 

[SieB]

If you up the voltage and you still get droop it might stop it from crashing, because the voltage is higher when it does droop it wont droop so much and prevent it from crashing if you see what I mean.

If it is the motherboard it won't be the B2 problem causing it that only affects the SATA 2 controller but you could have a faulty mobo either way. You might as well get it changed for a B3 version while it's under warranty anyway.

 

[Teh_Winneh]

I see what you mean now about upping the voltage, but that doesn't really solve the problem in an ideal way

It could be a good temporary, but a temporary nonetheless.

But yeah, I do hope it's the mobo

 

[SieB]

Yeah, I don't think there is a permanent fix tbh, apart from upping the voltage I can't think of anything else that would fix it, there aren't any other settings on the motherboard that could help, as far as I know anyway.

 

[Teh_Winneh]

I thought I'd update with how I'm getting on

Just to check, I was going to see what happened if I set a manual voltage at stock speeds. I did this and did NOT get the BSOD, so maybe I just wasn't as lucky with the Silicon Lottery? I'll see if the overclock works at 4.4GHz tomorrow

***EDIT*** All is good now I think! Just wasn't as lucky with the silicon lottery - 4.4GHz OC now