AV8 Voltage

Pollock

Golden Member
Jan 24, 2004
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Anyone else had issues with the vcore on Winchesters and the AV8? Say I set my vcore to 1.525v, and it shows up as that in uGuru. But when I check in CPU-Z and Central Brain Identifier, it shows the default 1.4v. Is this specific to Winchesters, AV8s, or might it just be my board in particular? I'm thinking it's my board because I'm not completely stable at 9*270 at 1.6v even (not a ram problem, no errors after 8 or so passes). That and my primary IDE connection prevents me from booting when connected to my CD drive. My hard drive is also SATA, if that makes any difference.
 

kb3edk

Senior member
Jul 11, 2004
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Same deal here on my AV8, I'm OCing my Winchester 3200+ to 2.2GHz at 1.55 vcore... shows up properly in uGuru Windows app and on my uGuru Clock, but in CPUZ it still shows up as 1.4v. I think the CPUZ value is just for reference purposes (stock vcore) and is not actually reading the voltage.

It doesn't bother me too much, what *really* bugs me about this board is the wacked out temperature sensor. Fortunately I have a watercooling setup with an analog sensor which gives much more plausible values. This CPU is under constant load for distributed computing (TA F@H) and uGuru says 55C, the analog sensor says 35C. The "true" value on-die is probably somewhere in between...

Other than that though I really like this board, despite the temp sensor it's a lot more stable than my other A64 system which is based off an MSI board.

-Adam in Philly
 

GML3G0

Golden Member
Jan 1, 2005
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Hmmm, when I had it at 2.4GHZ w/ stock cooling, it was telling me it was 59*C load. Does this seem about right (BIOS 17, in which I believe temps were calibrated)? What voltage will 2.4GHZ require? (because I was getting Prime95 errors on the 4th test on the max heat gen. torture test.

Also, in the Abit Equalizer, it seems as if it's overvolting. Do you have the same problem?
 

ChineseDemocracyGNR

Senior member
Sep 11, 2004
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The voltage issue is related to uGuru. There's no fix for it as far as I know, but it's not really important in my opinion.

Pollock,
for overclocking make sure you read Zebo's guide to make sure what's limiting you (board, CPU or memory).

 

kb3edk

Senior member
Jul 11, 2004
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Originally posted by: GML3G0
Hmmm, when I had it at 2.4GHZ w/ stock cooling, it was telling me it was 59*C load. Does this seem about right (BIOS 17, in which I believe temps were calibrated)? What voltage will 2.4GHZ require? (because I was getting Prime95 errors on the 4th test on the max heat gen. torture test.

Also, in the Abit Equalizer, it seems as if it's overvolting. Do you have the same problem?

That seems about right. I'm in BIOS 19 (the latest), and I went up to 2.3 GHz the other day, 1.7 vcore, motherboard said 60C under load, analog sensor said 40C. It was stable, but I think I set the vcore too high. I am probably going to try 2.4 at 1.65 vcore next, but before I do that I want to test my RAM (OCZ PC3500) and see if it can handle it. The other thing I'm gonna do before I try any higher overclocks is image my hard drives with Norton Ghost - I had some bad SATA RAID corruption a few weeks ago up at 2.5 and had to reinstall.

I don't see any overvolting in my Abit EQ, it's 1.53 (I run 1.55). If it's not uGuru, maybe it's a PSU thing...

-Adam in Philly
 

Pollock

Golden Member
Jan 24, 2004
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Originally posted by: ChineseDemocracyGNR
The voltage issue is related to uGuru. There's no fix for it as far as I know, but it's not really important in my opinion.

Pollock,
for overclocking make sure you read Zebo's guide to make sure what's limiting you (board, CPU or memory).
I already know it's the board, as I suspected. I'm running fine at 9*280 with a Neo2 with the exact same components right now.