8KDA3J Vcore question again

[The Overclocker]

I wonder if its only EPOX using the stupid vcore thing with *undervolt* problem ,, okey maybe a good thing if u run stock cpu but when overclocked it doesnt work because u need stable vcore otherwise it will not even boot up. I had hoped to use a newer bios but and i have tried all the possible fixes to have a stable vcore but i wont work. And it seems that newer boards have this behavior also.

[jnansley]

http://www.lowes.com/lowes/lkn?actio...chipshred.html

[gedon]

I have a 8kda3+ together with a 3200+ (default multi=10). maximum htt this chip run stable is 260MHz, maximum cpu clock is 2500MHz. In my case if I set cpu-multi manuell, board undervolts.
I set cpu-multi to auto, htt to 250MHz and there are no problems.
If you want to drop your cpu-multi down without undervolting you can try out this:
set vcore, vdimm, timings,... (oc-settings)
except: cpu-multi=auto; htt=200MHz
boot into windows and use clockgen and/or chrystal cpuid to change cpu-multi and htt.

[andlcs]

My 9NPA+ SLi Vcore voltage also fluctuates a lot:

http://www.geocities.com/a_andlcs/9N...X_Vcore_01.PNG

[gedon]

Originally Posted by andlcs

My 9NPA+ SLi Vcore voltage also fluctuates a lot

your vcore fluctuates (~0.05V). the 8kda3j/+ undervolts by 0.2-0.3V

[Wolf2000me]

First of all, I'm not saying your board doesn't undervolt but everybody should know better than to trust the onboard winbond monitoring chip. If you have a multimeter you should try to check it with that.
Epox usually has boards that overvolt a little. Mine does, which is considered a feature by epox tech support.

[Daniel ~]

It's just doing what it's supposed to do.

[Finetobe]

for the 8KDA3J and 8KDA3+ cut the power to the psu. hit the power butten, so there is no power left .

and then put the power back on.
This is a old bug with 8kda3j and 8kda3+ .

#4 0.05 volt. jesus christ that nothing. your psu +/- 5% on the rails.

[andlcs]

Originally Posted by Finetobe

for the 8KDA3J and 8KDA3+ cut the power to the psu. hit the power butten, so there is no power left .

and then put the power back on.
This is a old bug with 8kda3j and 8kda3+ .

#4 0.05 volt. jesus christ that nothing. your psu +/- 5% on the rails.

-0.05V is a huge variation for CPU voltage. . . It is limiting CPU overclock here.

[Finetobe]

0.05V can limiting any oc . just give it 0.10V more if it not stabel