Asrock 939Dual-SATA2 Vmods

[Flib]

Difficult to get a picture, there's so much hotglue...
I will try to do the mod tomorrow again, if the HTT will limit my overclock.

vldt and vsb seems to do nothing. Like on the dfi boards. The default voltage is enough.

[saddevil]

hi
my english is not good enough to explain...

but i think the manuals for the Vdd MOds are wrong

the Vdd voltage read point is not on the little Fet near the SATA II connector
these point is the Vsb Voltage

the Vdd regulator is near the Vcore
the chip is an RT9202

[Special_K]

I've thought about adding fan speed control to the board by modding the winbond chip, but I've not had time to do anything yet. It should be possible to do mod the chip to read other voltages, but it will involve lifting some of the pins on the chip and connecting the voltage supplies to them.
I'll look into it when I get some free time

hey persivore - did you ever get any kind of fanspeed control working on this board?

[tr4l1975]

Hi, this my first post here, I successfully did the vcore mod on my asrock 939dual-vsta, and would like to do the vdimm. I want the variable one as my ram requires 2.85-2.95v for a stable overclock. what kind of 500 ohm resistor exactly am I looking for? I started looking online and got confused by the extra specs(power,tolerance..etc.). please be specific and post links if you can. thanks for the help.

[Pavlos]

hi guys.

i just bought a dual-sata2 and an opteron 175. SO far i dont like that mobo much ( something is wrong with my x800gto ), and about o/c i cant see a lot of Mhz. My opteron is not a good stepping and i need more voltage. I want to do the Vcore mod but i am thinking of bios.
The mobo has 2.2 bios. Is this going to work with the mod ?
Right now i have the opty at 240Mhzx11 with a divider 5/6.