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abit kt7 voltage difference

H

htyei

Senior member
WHen I set the cpu voltage on bios on my abit kt7, the actual value read by the bios and motherboard monitor is always 0.75v higher.

Is this a true reading? Which reading should I beleive?

Am I able to get 1.925 without modding this board
Is this what all abit kt7 boards do are is it just mine?

running at at a set voltages of 1.725 (real 1.8) a duron 600 -> 850

 
It's not just you. I have the excact same problem with my KT7, and I don't think we're the only ones. I posted more or less the same question you do some weeks ago, but no one were able to tell me which reading to trust.

However, I thought the KT7 wasn't able to go higher than 1.85V, which could mean that the hardware monitor reading is the wrong one. On the other hand, when people say the KT7 can't go above 1.85V without modding, they might mean that you can't select more than 1.85V in BIOS, while the actual output is much higher...

I'm sorry I can't give a more helpful answer, but at least I can tell you that you're not the only one with this problem.
 
was just to post the same question. mine's more messed up than the rest of you guys...my voltage reading is about 0.1v off. right now i have a 850 clocked to 1000 and set a 1.8v voltage, but it shows up in the pc health thingie and the via hardware monitor as 1.89v. when i had it at 1.7v(before i overclocked) it showed 1.81v.

it's running cool now(i have a global win fop38 in a tornado case 🙂). after a couple of hours of ut it's still at ~27 degrees c.

1.89v scares me and i don't want to mess up my cpu if that's bad for it. 🙁
 
I have a feeling they aren't using a precision voltage reference for there A2D on the abit KT7 since I haven't found one yet (I'm an EE). I figure they are probally using an 8-bit a2d since it is the cheapest. If they set the voltage range for the a2d to about 1 volt..that would give them accuracy to about 4mV. Now, if you delta the reference, you can easily account for the voltage shift. And, the bigger the delta refernce or the wider the voltage range for the a2d, the bigger the error.

This is why we use precision references and solid ground planes in the aerospace industry...complete accuarcy

-Navi (going to bed....92 hours at work this week)
 
Rumour has it the Bios settings are reasonable close, but the VIA chipset's HW monitoring is off ~.07vdc. I find this true in all of my "VIA VT82C686 Super/SouthBridge" mobos... 😀
 
So far I've put together 4 KT7-Raid's, 1 KT7 and one KA7-100 and ALL OF THEM have this exact same voltage thing going on. I don't know which to trust. They are not all exactly the same voltage at the same BIOS setting, so I'm thinking that NAVI is probably right.

I should be buying another 3 KT7's in the next couple of days... I'll post if any of them are different than what I've seen so far.

Joe
 
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