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Can someone explain this to me? (VRM Frequency Issue)

post #1 of 3
Thread Starter 
Hey all,

Background of the issue: I thought I had a failing PSU due to my system powering off randomly at my higher clock like when you overload a rail (currently @ 4.9GHz). After having it happen on two PSUs I started to think my motherboard was failing.

I wanted to investigate just to be sure so I tried messing with different settings and when I lowered my VRM frequency it would happen, except sooner the lower I went. I need my VRM frequency to 400mhz for the issue to not happen. Is this something to be worried about? And also could someone explain why the higher setting would make a difference and why lower settings cause this to happen?

EDIT: Of course it would happen once again right as I post this. I'm at a loss people, any thoughts? Do I need to buy a temporary mobo and RMA this sucker?
Edited by killerhonky - 4/25/12 at 6:43am
post #2 of 3
First off, VRM frequency is 400KHz, not MHz wink.gif

It's purpose is to set the frequency of the VRM's supplying Vcore. Lower frequency gives you lower temps, but a potentially unstable overclock. Higher frequency causes the VRM's to supply Vcore faster during and after load. If you are getting crashes with low frequency, I'd look to board and/or processor as the culprit.

What do the rest of your BIOS settings look like?
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Le Tigre
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post #3 of 3
Thread Starter 
Quote:
Originally Posted by xxmastermindxx View Post

First off, VRM frequency is 400KHz, not MHz wink.gif
It's purpose is to set the frequency of the VRM's supplying Vcore. Lower frequency gives you lower temps, but a potentially unstable overclock. Higher frequency causes the VRM's to supply Vcore faster during and after load. If you are getting crashes with low frequency, I'd look to board and/or processor as the culprit.
What do the rest of your BIOS settings look like?

Lol knew that, apologies. Rage typo. But they are pretty standard for clocks 4.8 and up. I have all C-States, EIST and Thermal Monitor disabled until I get my clock/issues sorted out as well as my memory at jedec specs.

Multi: x49
BCLK: 100
Internal PLL: Disabled

LLC: Ultra High
VRM: Manny/350
Phase/Duty: Extreme
CPU Current Capability: 140%

VCore: 1.44v (in CPU-Z)

Btdubs, seriously sad that I bought a 2700k, even if it was only $10 more than a 2600k at the time. I wish I would have got a 2500k, I don't need hyperthreading. Really just want to sell it and get a golden 2500k. rolleyes.gif

UPDATE: Holy crap. Fireball just shot out of my 570.... maybe it was the cause. Gross, my room smells like burnt PCB. Now I have to wait for a freaking RMA.... might just get a z77 board while it is away so I can make sure it is not my motherboard and have a working computer.

UPDATE: Super weirdness... Enabling PLL overvoltage fixed this problem for clocks higher than 4.7. I thought it was just to help you post/boot. Huh, well... seriously happy I figured it out.
Edited by killerhonky - 4/30/12 at 8:14am
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