What Core Voltage to trust? Sandra/MBM or BIOS?

[markedmundb]

On my SOYO SY6VCA mobo, I got my new cC0 Celeron 566 (in Abit Slocket !!! -won't trust new CPUin old Iwill one in case damaged by Mosfet popping on my old BH6, which also killed my old cB0 Celery). The Slocket was at default volts. In the BIOS it shows Volts in Health monitoring as 1.72Volts.

Under Motherboard Monitor5 AND SiSoft Sandra the voltage is shown at 1.8V.

Now I'm gonna burn it in, I've upped the Volts on the Slocket to 1.85V. In the BIOS is shown as 1.82, under Sandra and MBM 1.91v. The mobo jumpers to up voltage (to +7.5%) haven't been touched.

On my old pII, sandra showed 2.1V, BIOS said 2.01 or 2.03Volts.

I know Sandra sometimes gets stuff wrong, but MBM as well?

Thoughts...? Comments...? Suggestions...?

PS Any idea what the third temp (VIA-3) on my Mobo is?

 

[Jon]

As a rule, if you have built in monitors for these things, ALWAYS trust the BIOS if in doubt. Not to say it can't be wrong as things tend to heat up once Windows is rolling, but it almost always be more accurate than software.

 

[markedmundb]

Cheers Jon. It's just my Slocket's set up for 1.85V. The Bios might have a *stop* on voltages over 1.8 for CuMine chips. Sandra and MBM are always ~0.1 of a volt above BIOS. I think a software translation is the problem also.

Any one else have a Soyo out there?

Anyone know if Soyo's BIOSes are clever enough to tell a Slocket to 'stop being silly' and set the volts for what it thinks the volts should be?

 

[markedmundb]

Hmm, how's this for odd?

I downgraded my BIOS to the previous one, trying to get this effing Celly stable. (Backed it down to 95Mhz FSB & it's stable-methinks slocket problem...?)

Now the BIOS correlates with MBM and Sandra. Running at the most stable 2.00V I've ever seen. It hasn't fluctated once. I've had MBM dashboard on most of the time as 2.00V is a bit high, keeping an eye on my temps. CPU hasn't gone over 24degs C.

 

[Tim-]

I wouldn't put a lot of faith in either one for absolute accuracy. Just pick the highest one and consider it "worst case".