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Offset/"normal" voltage unstable on Gigabyte Z68

post #1 of 12
Thread Starter 
OK, I'm really fed up of this motherboard now.

I set the voltage mode to manual and 1.240V, with level 4 LLC. This resulted in 1.224 to 1.236V under load, and it was stable at 4.2GHz for 12 hours of Prime95 Blend.

Since I don't want my CPU running at full voltage when it's sitting idle, I switched back to offset voltage mode (which for some reason in the Gigabyte BIOS is named "normal"), added a notch from what I previously had for 4GHz and ran Prime95 again. The load voltage fluctuates a lot, but never goes below 1.224 (I saw between 1.224 and 1.260).

So why oh why does my PC crash after running Prime for a minute or two? Sometimes I get a 124 BSoD and sometimes I don't get any BSoD - it just restarts as though I had pushed the reset button on my case.

Any ideas at all? Close to RMAing this motherboard as I've had problems with it even when not overclocking.
post #2 of 12
When I switched to offset mode on my sig rig, I had a hell of a time getting everything worked out. In the end, the solution was dropping LLC to a lower setting and increasing the offset. I was 8 hour LinX and P95 stable, but was crashing while playing Source games.
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by hermitmaster View Post

When I switched to offset mode on my sig rig, I had a hell of a time getting everything worked out. In the end, the solution was dropping LLC to a lower setting and increasing the offset. I was 8 hour LinX and P95 stable, but was crashing while playing Source games.
There's no LLC on Gigabyte boards when using offset mode frown.gif

Thanks anyway.
post #4 of 12
There is LLC with offset on their Z77 boards.

Are you using the latest BIOS? There is UEFI update available for your board. Also beta BIOSes over here.
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post #5 of 12
Quote:
Originally Posted by Ellis View Post

There's no LLC on Gigabyte boards when using offset mode frown.gif
Thanks anyway.
There is on mine. Try the BIOS update as DeXel suggested.
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post #6 of 12
Quote:
Originally Posted by hermitmaster View Post

There is on mine. Try the BIOS update as DeXel suggested.

You have Z77 board, Ellis doesn't

Also with offset sometimes higher voltage should be applied.
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post #7 of 12
Thread Starter 
Quote:
Originally Posted by DeXel View Post

There is LLC with offset on their Z77 boards.
Are you using the latest BIOS? There is UEFI update available for your board. Also beta BIOSes over here.
Whoops, I should have said there isn't on their Z68 boards.

The UEFI update is totally broken - turbo mode doesn't work, offset voltage is even worse than it is on the BIOS, it overclocks your CPU by default, you can't enter the UEFI with some USB devices plugged in, etc.

The update on the beta BIOSes page you linked is in fact the latest UEFI update which I have tried - I'm on the F7 BIOS which is the latest stable one, I'm not sure if the beta versions F7a, F7b etc. are more recent than F7 - I believe they are older.
Quote:
Originally Posted by DeXel View Post

You have Z77 board, Ellis doesn't
Also with offset sometimes higher voltage should be applied.
I've tried bumping it up by about 3 notches which results in something like 1.26+, surely I can't need that much of a difference?
post #8 of 12
Quote:
Originally Posted by Ellis View Post


I've tried bumping it up by about 3 notches which results in something like 1.26+, surely I can't need that much of a difference?

But did it help?
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post #9 of 12
Thread Starter 
Quote:
Originally Posted by DeXel View Post

But did it help?
Not in the slightest, will try excess voltage again now.
post #10 of 12
Offset can be tricky to get working. I am running +0.90 with LLC on Turbo for 4.5 Ghz and it's perfectly stable (about the same voltage as fixed voltage) and Gigabyte Z68 boards aren't known for their stability either.
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