P5k Pencil mod + Overclocking

tombomb · 11 Sep 2012 at 09:48

I've got a standard ASUS P5K and i'm getting a massive vcore vdroop under load when running Prime95.

I have overclocked my q6600 to 3.2GHZ (400 x 8 @ V1.4).

Im having to put the voltage this high as when its under load the voltage drops from 1.360 (cpu-z) to 1.264 (cpu-z). So thats a V0.1 drop under load (sometimes more).

Idle temps are 34C and load temps can rise to 53C over a long period on prime.

What id like to do.....

I have heard of a "pencil mod" for my motherboard that resolves this vdroop issue. If I could do this I could run my overclock at a much lower voltage resulting in lower temps. This would also allow me to try and OC to 3.4GHZ.

My cooler is the thermalright TS-140.

Does anybody know where I am supposed to shade with a pencil to achieve this on my board?

http://uk.asus.com/Motherboards/Intel_Socket_775/P5K/

I am flashed to the latest BIOS.

thanks

andybird123 · 11 Sep 2012 at 09:57

https://www.google.com/search?q=pen...ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi

I also did this mod back in the day and got me from 3.2 to 3.6ghz with the same vcore set in bios (had to increase the chipset voltage too though and point a fan at the northbridge heatsink)

tombomb · 11 Sep 2012 at 10:04

So I shade the same place as the P5K-Deluxe?

andybird123 · 11 Sep 2012 at 10:07

yeah, sorry, if you do the search without the deluxe you get pics of various P5K's all with the same are shaded

https://www.google.com/search?q=pen...i&biw=1366&bih=643&sei=MP9OUPHeNNSa1AWr44HIBQ

tombomb · 11 Sep 2012 at 10:14

great thanks for your help. Ill report back once I have done it

tombomb · 11 Sep 2012 at 12:01

I have done this mod now...

It has improved my vdroop but not stopped it. Is this whats supposed to happen or shal i go ahead and shade some more pencil onto it?

My voltages now read,v1.425(BIOS) V1.376(cpu-z)Idle - V1.312(cpu-z) on load.

tombomb · 11 Sep 2012 at 12:06

still nearly v0.1 drop from bios!