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How do you find Offset voltage with haswell?

post #1 of 7
Thread Starter 
I have no idea how to find my offset with haswell. With Ivy I would just use coretemp and subtract my vid from my vcore but I cant find my vid with haswell. Any help? Im running at 4.8ghz with 1.40v.
post #2 of 7
What motherboard? Seems like most people are just using a fixed voltage with Gigabyte, because the voltage still drops at idle that way, and either fixed or adaptive with Asus. Not much discussion about offset - you'll probably just have to put in something for the offset, see what that gives you, and then adjust. I don't think there is a reliable way to find the VID when overclocked, all the current tools seem to just show whatever fixed voltage you have set in the BIOS.
post #3 of 7
Thread Starter 
Quote:
Originally Posted by Forceman View Post

What motherboard? Seems like most people are just using a fixed voltage with Gigabyte, because the voltage still drops at idle that way, and either fixed or adaptive with Asus. Not much discussion about offset - you'll probably just have to put in something for the offset, see what that gives you, and then adjust. I don't think there is a reliable way to find the VID when overclocked, all the current tools seem to just show whatever fixed voltage you have set in the BIOS.
I have an Asus board so would I just set it to Adaptive? What do I input for the unit after?
post #4 of 7
I don't have an Asus, but I think you just set it to adaptive and then specify the max adaptive voltage (so whatever your manual voltage was). But I think it still goes over that for AVX loads.
post #5 of 7
I use offset...

At default settings you use the default core voltage, mine is 1.175, I need 1.298v under load to be stable.


So 1.175+.125 gives me 1.3v

Keep in mind if you use any strap but the base it will throw off the vid table and you will have to recalculate the offset required.
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Mighty-iTX
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by grunion View Post

I use offset...

At default settings you use the default core voltage, mine is 1.175, I need 1.298v under load to be stable.


So 1.175+.125 gives me 1.3v

Keep in mind if you use any strap but the base it will throw off the vid table and you will have to recalculate the offset required.
I got it thanks, mine was .250
post #7 of 7
Quote:
Originally Posted by midniteboss View Post

I have an Asus board so would I just set it to Adaptive? What do I input for the unit after?

Be careful. I have an Asus Z87-WS and the behaviour of adaptive voltage is that it will give you the voltage you dial in BUT programs that use AVX instructions will result in another +0.1v bump. This can put your voltage well above the 24/7 "safe" ranges being thrown around on the forums. The other side of the issue is that if you try to correct for this issue then you could end up under the stable voltage necessary at your target frequency.
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