for those who have fix vcore mobo...read...ways...

[potatoesann]

at last i found a way to increase fix vcore on socket370 mobo...like my DFI CA61...
previously i fail to oc my cII to 850mhz on the board as the vcore is auto detected at 1.50v...
after have some look at the celeron datasheet...i found that there is way to manually change the voltage identification (VID) by modifying the VID0 VID1 VID2 VID3...
TABLE :
VID3 VID2 VID1 VID0
1 0 1 1 1.5v
1 0 0 0 1.65v....etc

if u ground the VID1 and VID0 to VSS pin which is near the VID pin..u will effectively increase the vcore to 1.65v which enable my CII 566 to run at 850mhz...damn stable...
other voltage like 1.60 and 1.55 also can be done by this way...unluckily...1.70-1.85 is impossible to be done...onli 1.90v can be modify....which is a bit risky...and this method can be apply to PIII cop also...

how to gound??? ha... i use a s. tape or double side tape and little piece of soldering iron(2.5mm long) and simply tape at the back of the motherboard socket370 pin... and now i run at incredible 850mhz @ 1.65v...seti@home for 1 day+++....and well good job DFI's guy, the board is damn stable too....

anyway...i warn u...this will definitely void ur warranty....use at ur own risk...

any question to ask simply msg me... sweetpotatoes_2000@yahoo.com

sweetpotatoes

CII566 @ 850 1.65v(modified) DFI CA61 mobo
might run at 875mhz(crashed once while play counter strike )

 

[VoodooExtreme]

You Rule!!!

I've been looking for a solution to overclock my celeron too. Looks like u solved my problem also.
Just one question: How do u know what pin is what? U can't provide a picture?

Mail me on: voodooextreme@telia.com

 

[potatoesann]

i have sent u the table and pic for the pins...and some extra instructions...good luck...

 

[VoodooExtreme]

THANX!!! Very appreciated

 

[VoodooExtreme]

What do u do to the pins at the processor? cut them off!?
I don't really get how ground the VID1 and VID0 to the VSS pin... do u connect the pins together on the back on the mobo? Have u figured out this yourself or seen a site, if u have a site with pictures on the whole operation I be glad to look at it...

(I'm having little difficulties with understanding some tech. english)

 

[potatoesann]

i found the way myself and did some experiment to find the way...just use anyway to connect the VID pin to VSS , connect a wire using soldering tools(hard to remove, so not recommended).for me i use a short soldering iron(2.5mm) and stick with tape...then stick at the back of the bord to create short circuit between the pins...this is easier....

potatoesann

 

[VoodooExtreme]

Ok, thanx again!

I'm at work now so I'll have to check my mobo at home to easier see but I understand what you are mean now


Found a pic that I think is what u mean???
picture

 

[VoodooExtreme]

Ok, thanx again!

I'm at work now so I'll have to check my mobo at home to easier see but I understand what you are mean now


Found a pic that I think is what u mean???


picture!!!!

 

[potatoesann]

that's one way to run coppermine(not changing CPU's voltage ID!)...is modifying the sloket...justr apply the way of modify... i mean the VID pin...that is!

 

[dandan]

this trick works great. I have a Abit BM6 that would not let me up the voltage enough to run my 533a at 800. what i did was with a strand of wire from an old ide cbl, is twist it around the pins on the cpu. only took about 30mins of work and if i want i can always pull it off.
my cpu is now happy at 920mhz at 1.8volts
good luck
dan