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BIOS locking up at 4.6Ghz and up

post #1 of 8
Thread Starter 
Hey guys, so as the title states my BIOS is locking up/freezing whenever I push my CPU past 4.5Ghz (I'm perfectly stable at that with a +.010 offset) regardless if I up the vcore. I'm guessing its locking up because of the CPU because this is the second board it has caused the BIOS to lock. My older board was a ASRock Extreme 4.

Has anyone experienced this before? I've never had the BIOS become unstable while OCing before (these two boards are the first UEFI BIOSs I've worked with before). Is there a setting or voltage that I can try to up to counter this?

Thanks
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post #2 of 8
Enable PLL overvoltage and use fixed voltage for initial overclock. For 4.6 Ghz most chips need about ~1.35v. Also set LLC to Turbo.
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by DeXel View Post

Enable PLL overvoltage and use fixed voltage for initial overclock. For 4.6 Ghz most chips need about ~1.35v. Also set LLC to Turbo.

Hey DeXeL long time no see... I'm guessing you can guess what mobo I went with! smile.gif

I've got all those settings set as described besides the PLL. I'll give it a try and report back. The extreme LLC on this board can provide a spike sometimes correct? So turbo is *best*?

Thanks again.
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post #4 of 8
Yea long time no see lol. I though you got both UP5 and Sabertooth...

I am not sure about spikes on UP5, but I think I saw some with my board, so Turbo is the best. PLL should help you to push it further. Here is some read.

Are you sure that temps aren't problem here? Also your chip can be the culprit. I can't get above 4.5 Ghz either unless I push insane amount of voltage. Also update the BIOS. Early BIOS versions of UD5H had locking BIOS problems when Vcore was too low. Maybe it's the same with UP5.
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post #5 of 8
Thread Starter 
I did, the Sabertooth is back in its box.

Thanks for the read. Yeah my bet is on it's the chips fault. Yes, I am approaching the heat wall, ~70c load. Just experimenting and seeing whats up. I'll have to try a little later.
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post #6 of 8
Thread Starter 
Alright! Ran some tests. I was able to get it to boot and start priming at 4.8 after setting the PLL. Didn't run it long or test stability because that voltage jump from 4.5 to 4.8 was steep and created to much heat and just not worth it.

I'm happy with 4.5 and that little offset, just wanted to see what I could do.

Couple of BIOS questions for you. I'm asking these assuming they were features of your own BIOS and you have background. No worries if you aren't sure. I can do some digging.

1. PWM Phase Control - Should I change this off Auto for any reason?
2. Leave other LLCs (besides cpu) on Auto while overclocking?
3. Performance Enhance setting on DRAM - I set it to the fastest option I believe, this really doing anything?
4. Vcore Voltage Response - I put this on fastest. Should it be something else?

Again, thanks for all your help.
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post #7 of 8
1. Setting it on Extreme Performance might help, so try it.
2. Aren't there just 2 options? 1 for CPU and the other for iGPU? Unless you are overclocking it, no need to touch it. I didn't mess with it.
3. There was a lot of talk about it when GB Z77 boards were first released. Here is one of the threads.
4. I either leave it on auto, or set on fast.
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post #8 of 8
Thread Starter 
Thanks for answering, a big help. There were a couple more options in the bios for LLC but I'll just leave them on auto. It's running fine as is anyways. Once again you were a big help, thanks a lot! thumb.gif
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