How can I change the noprthbridge volatge?

I have an Epox 8rda+ and peolpe say raising the volateges on the northbridge helps with overclocking. So how do u raise it in the bios? i only see CPU, RAM and AGP voltages

I believe raising the agp voltage raises the NB voltage.

For the 8RDA/8RDA+, it requires a hardware modification, known as a "Vdd mod".

8RDA.com VDD Mod Example

Do a google search and you can find some walkthroughs, such as:

Motherboardfaqs.com Article (this is the best one)

FastLane Hardware Forums Article (need to register)

also, alot of times feeding one component feeds a secondary one too. try the vagp and see if it helps...

i fail to see how raising the agp voltage will raise the power to the nb

on early rev 8rda's it wasnt possible to adjust the vdd voltage, only came in on the rev 2 boards afaik, so if yours is an early model, you'll be looking at modding your board im afraid

Also, if you use the SMD Grabbers...make sure to keep a eye on them...a lot of people have had them fall off and fry the MB among other things...Just make sure they are firmly on and make sure you have the trimmer mounted solidly and as close as possible to the VDD mosfet...dont want to have too long or short of lines going from the trimmer to the grabbers...

yea you probably heard one of us 8rda+ weirdos talking about a VDD mod... I'm gonna be doing one in the uncertain future...

I think I'm gonna try this too, now that I think about it.

My 8RDA died from a MOSFET failure that totally distroyed the ATX connector (should have put a Server or P412v connector on it). When I pulled it out I noticed buldging cap tops, with a tiny bit of leaking. Unless you knew to look for it you wouldn't notice it but it was there. Also disabling the current protection by removing the resistor near the VRM didn't let me get a higher voltage, the board still cut out at 2.050v-2.1. Even though the BIOS goes to 2.1v

Yes and my board didn't have a northbridge voltage thing either jsut like yours. Also I would DEFINETLY put a better NB cooler on the board. The passive from the factory is absolutly horrible.

if o/c your northern bridge i would recommend on checking out www.thermaltake.com
they have a northern bridge cooler with a nice fan and heatsink
worth the look