Problems with Athlon 1200 default voltage/tweaking on A7V133

[gramb0]

Hello.

I have an Asus A7V133 and AXIA Athlon 1200 (266 fsb). I am under the impression the default voltage for this CPU is 1.75. I set the BIOS to "auto" and MBM 5 shows the voltage as 1.82.

The chip doesn't want to boot at 1400 at "auto" voltage so I set it to 1.80 to see what happens. This caused a hard lock and I had to short the CMOS (I think this may have been beacuse I also had the FSB above 145, my ram is Micron CAS2 PC133 with -7E 7ns chips).

Anyone know if the mainboard is overpowering the CPU or if MBM is just giving an incorrect reading? And anyone know why it doesn't want to boot with 1.80v? I'm surprised the chip won't do 1400, it's a week 11 AXIA and has no heat problems (doesn't reach 50 during peak usage with a Volcano II without compound)

Thanks

ttyl

 

[cubanx]

Had the Same exact problem with my MSI K7T-R sending 1.90VCore instead of 1.75V. Had to lower it to 1.60 Volts to get 1.75 Volts. Someone said some MOBO companies are putting a slight overvoltage to increase stabilty but GEEZ a 1.5 Overvoltage on the VCore... at least yours isn't as bad.

 

[gramb0]

Ah thanks for the tip. Was probably sending 1.85 then earlier. I'll manually put it down to 170 and hope it's still stable.

ttyl

 

[gramb0]

Well running with the BIOS set to 1.70v now and AsusProbe as well as MBM are reporting 1.76volts. CPU is now at 42 degrees while under "normal" desktop use (IE, Winamp, ICQ, Word etc)

ttyl