dinos22

ROFL mobile CPU heheh

eva2000

Yeah who knows -> http://forums.overclockers.com.au/sh...d.php?t=546051

Anyway, at higher vcore above 1.6125v the initial pencil modded of drooping resistor from 80ohm to 37ohm resistance wasn't enough to prevent further vdroop. So whipped out the 2B pencil and dropped resistance down to 14.5 ohm. And now it's all good at least from bios perspective

Final outcome



Improvements after vdroop pencil mod are amazing! Before the mod, 10x 400FSB = 4000Mhz would need 1.7v max vcore set in bios for 1.62v idle and 1.59v load. I could pass single Super Pi 32M but Systool dual 32M Pi would reboot at 50-80% mark - Systool dual 32M Pi is a good indicator of whether a setting is capable of dual Super Pi 32M.. Now with vdroop pencil mod, with vcore set to 1.65v in bios I get 1.616-1.624v idle and 1.624v load and now capable of Systool dual 32M Pi

Idle


Systool dual 32M Pi load

sTARk

That pencil mod rocks!

dinos22

that's it

*makes a huge mess in kid's room looking for any pencils lying about

eva2000

Yeah dinos, I highly recommend you dig up a pencil

Dual 32M @ 4000Mhz - 10x400FSB at 1.625v bios (1.592v)

Prior to doing the Vdroop pencil mod, my X6800 L627A872 cpu could pass single Super Pi 32M at 1.7v maxed vcore in bios (1.62v idle/1.59v load) but dual Super Pi 32M would reboot. Now with Vdroop pencil mod I can do Super Pi dual 32M at just 1.625v bios set (1.592v - 1.600v idle/load)!

Decided to do the full photo shoot of the event with the following applications opened as well:

• 4x Cpuz windows
• 1x coretemp
• 1x Asus PC Probe2
• 1x Asus AI Suite
• 1x Memset
• 1x Windows Task Manager window

You can see up to iteration #10 dual Super Pi 32M times were similar for each instance, but core0 (Super Pi on the right of screen) started to run slower probably due to all the applications opened as well. As you can see vcore reported didn't budge much and for some reason my X6800 L627A872 runs very cool - about 14-22C cooler than my E6600 B1 Step 5 ES cpus

Click image for larger photo.

Dual Super Pi 32M - idle before start

Dual Super Pi 32M - completed

eva2000

So how has Vdroop pencil mod helped max single Super Pi 32M clocks ?

Before Vdroop pencil mod
- max single Super Pi 32M = 4069Mhz at 1.7v bios set (1.62v/1.59v load)

After Vdroop pencil mod
- max single Super Pi 32M = 4080Mhz at 1.65v bios set (1.62v idle/load)
- max single Super Pi 32M = 4091Mhz at 1.675v bios set (1.65v idle/load)





Note room temps have dropped from 27-31C to 24-28C! So maybe that helped along with more steady vcore under load

kayl

so we need a 2b pencil eva200, keep the benches coming

JAFFA

Yeah fluctuations in ambient do make it hard to really know one way or the other, but none the less it does seem to be an obvious improvement there. Great work as usual.