Question on Pencil Mod?

[imported_Champ]

I've seen guides on pencil modding and its effect on vdroop but I was just wondering if it has any effect on Bios to OS vdroop? My P5K has very little load vdroop and my only issue is i need 1.36v in Bios which goes to 1.31v at idle when in OS and intel says 1.35 for the E8400 so I am weary of using this much voltage. I am overclocking and I cannot get higher than 3.7 with this droop and still be comfortable, my plan is 3.9 or 4.0 on air. As well I heard that pencil mods are removable, is that true?

Thanks

 

[xxxFrogg]

Hey Champ,
Until a more knowledgable person answers your post, heres a link to check out to tide you over.
http://i4memory.com/f89/asus-p...droop-pencil-mod-4654/
As far as i know its easily removable since all your doing is basically removing the pencil lead similar to erasing on paper.( qtips and alcohol )
Heres the in-house guide also.
http://forums.anandtech.com/me...055486&highlight_key=y

Edit* Quoting MetaDFF from the previous link,
"Just a FYI for the Asus P5K Deluxe motherboard owners.
If you have a Asus P5K Deluxe motherboard it isn't necessary to do a pencil mod to fix the Vdroop.
In the BIOS there is an option called CPU Voltage Damper that you can ENABLE to minimize the Vdroop. (In my case it drops about 0.01 V).

There is actually more info specific to P5K overclocking that can be found here:
here

Edit: It looks like the CPU Voltage Damper droops less when you are setting the core voltage via AUTO. It seems like the P5K likes to overvolt the chip when overclocking with voltages set to AUTO.

 

[imported_Champ]

Yeah I do have the Voltage Dampener enabled and it does reduce vdroop while loading, but my problem is the difference in voltage from Bios to the OS...My Bios voltage is 1.36v and at idle in windows it shows 1.31v and at load in windows it is 1.29v...I know I can hit higher overclocks with safe voltages if I can find a way to make the bios voltage the same as the windows voltage

 

[Alaa]

I have the same problem under full load; the voltage goes back to 1.296v from 1.35v. It stays @ 1.31v under Medium load/idle. Motherboard: Gigabyte P35 DS3L.

 

[xxxFrogg]

Yeah I do have the Voltage Dampener enabled and it does reduce vdroop while loading, but my problem is the difference in voltage from Bios to the OS...My Bios voltage is 1.36v and at idle in windows it shows 1.31v and at load in windows it is 1.29v...I know I can hit higher overclocks with safe voltages if I can find a way to make the bios voltage the same as the windows voltage

Thats pretty much the definition of Vdroop. There will usually always be a difference. Theres really no way around this since people aren't able to use superconductors at room temperature and manufacturers have to mass produce the boards which means they don't get them perfect. Some boards are better than others at minimizing this Vdroop. There may be other boards that have really low Vdroops. Pretty much the only way to minize this is to look up the pencil mod specific to your board and just pencil over the appropriate spot( resistor, transistor, etc). If you read the in-house guide, the only thing to be careful about is excess lead shavings which could cause a short somwhere. Pretty much, if your careful you don't have to worry about this(Blow off board ,etc). There may be other custom mods for your board where u add in something, but this is sure to void any warranty on it. This is a widespread issue across various boards where the true overclocker has to mod( pencil mod, add in parts,etc). Pretty much you just have to search for the mod for your board. If I had your motherboard right, my previous link should of helped you out a little.

Also there are variations to your motherboard, Provide exact details and it will help anyone else here looking stuff up.

Edit* From my first post, In This link, the user reports: Results- droop is no more than .02, previously the droop was around .07 of a volt. Thats about as close as you could get.
Edit* Links you might find Useful,
http://www.xtremesystems.org/f...howthread.php?t=147110
http://i4memory.com/f89/asus-p...droop-pencil-mod-4654/
http://www.xtremesystems.org/f...p=2359837&postcount=37
http://www.overclock.net/mothe...asus-p5k-e-pencil.html
The previous link looks real detailed if thats your mother board.


I personally don't have your mother board so mod at your on risk. I hope atleast i'm helping you out though.

 

[xxxFrogg]

Here is a link for GIGABYTE GA-P35-DS3L
Its a Hard mod. Don't use it if you don't completely research it and understand what to do.

Heres another link that appears to be a pencil mod.