Asus P5K "Vanilla" vmods

[Learn]

Hmm, will change my mod then too!

Is there any Vfsb mod out there and anyone knows what exactly does Vfsb do?

With my E6400 and E6600 it doesn't help, but the GTLREF seems important with the quad core.

Interesting Article about: Adjusting A/GTL+ Levels for Increased FSB Signaling Margins and Overclocking

Some tests done today:

Config:
P5K (v-core, v-droop, v-ddr2, v-cpupll/southbridge/sata)
Revision 1.02G
BIOS 0603
E6600 388 x 9 1:1
v-ddr2: 2.2v
v-core: 1.38v

FSB VTT in the BIOS | DMM | GTLREF
AUTO | 1.55v | 0.99v
1.20v | 1.55v | 0.99v
1.30v | 1.33v | 0.85v
1.40v | 1.44v | 0.92v
1.50v | 1.55v | 0.99v

v-MCH in the bios | DMM | Heatpipe Temp*
AUTO | 1.58v |
1.25v | 1.58v | 50.8°C (+/- 0.4°C)
1.40v | 1.43v | 44.3°C (+/- 0.4°C)
1.55v | 1.58v | 50.9°C (+/- 0.4°C)
1.70v | 1.73v | 56.9°C (+/- 0.4°C)


Now with the v-mod (FSBVTT & GTLREF), VR set at 14K Omhs

FSB VTT in the BIOS | DMM | GTLREF
AUTO | n/a | n/a
1.20v | 1.65v | 1.06v
1.30v | 1.43v | 0.91v
1.40v | 1.54v | 0.98v
1.50v | 1.65v | 1.06v

FSB VTT set at 1.20v in the BIOS and V-MCH set at 1.25v in the bios = odd


read points GTLREF
read points FSB VTT post #51

* Digital thermometer + good probe in the heatpipe (top of P35 in the heatpipe),Noiseblocker SE2 @ 7v for the 4X512MB and

heatpipe. Temp after 15 minutes of Prime95 25.3 FFT 1024.

the max v-core i can give on my p5k is 1.92v more and it shut down, any ovp mod or somthing? have you guys tested max v-core you can give on windows?

thanks

I can take a look the next week.

[|RickY|]

awsome, thanks

[funkflix]

With my E6400 and E6600 it doesn't help, but the GTLREF seems important with the quad core.

Interesting Article about: Adjusting A/GTL+ Levels for Increased FSB Signaling Margins and Overclocking

Some tests done today:

Config:
P5K (v-core, v-droop, v-ddr2, v-cpupll/southbridge/sata)
Revision 1.02G
BIOS 0603
E6600 388 x 9 1:1
v-ddr2: 2.2v
v-core: 1.38v

FSB VTT in the BIOS | DMM | GTLREF
AUTO | 1.55v | 0.99v
1.20v | 1.55v | 0.99v
1.30v | 1.33v | 0.85v
1.40v | 1.44v | 0.92v
1.50v | 1.55v | 0.99v

v-MCH in the bios | DMM | Heatpipe Temp*
AUTO | 1.58v |
1.25v | 1.58v | 50.8°C (+/- 0.4°C)
1.40v | 1.43v | 44.3°C (+/- 0.4°C)
1.55v | 1.58v | 50.9°C (+/- 0.4°C)
1.70v | 1.73v | 56.9°C (+/- 0.4°C)


Now with the v-mod (FSBVTT & GTLREF), VR set at 14K Omhs

FSB VTT in the BIOS | DMM | GTLREF
AUTO | n/a | n/a
1.20v | 1.65v | 1.06v
1.30v | 1.43v | 0.91v
1.40v | 1.54v | 0.98v
1.50v | 1.65v | 1.06v

FSB VTT set at 1.20v in the BIOS and V-MCH set at 1.25v in the bios = odd

http://www.overclocking-jp.eu/public/vmods/100_6878.jpg
read points GTLREF
read points FSB VTT post #51

* Digital thermometer + good probe in the heatpipe (top of P35 in the heatpipe),Noiseblocker SE2 @ 7v for the 4X512MB and

heatpipe. Temp after 15 minutes of Prime95 25.3 FFT 1024.



I can take a look the next week.

Thanks a lot for your good explanation!

The same "feature" with the Vmch is on the P5B Deluxe too! Auto = 1,7xV...

[|RickY|]

well ovp must be pin11 to ground :



thanks to jonny bravo, http://www.ocxtreme.org/forumenus/showthread.php?t=1153

[|RickY|]

well.. it's being hard to find a spot to solder... i'v insulated my p5k with nail varnish :S it hard to check with multimeter lol

[arvardai]

Pencil mod vdrop P5K SE?

[OC_Windforce]

well ovp must be pin11 to ground :



thanks to jonny bravo, http://www.ocxtreme.org/forumenus/showthread.php?t=1153

Pencil MOD possible? pin11 (250Kohm)

[|RickY|]

it must be. my board are stupidy insulated with nail varnish it's being hard to make some reads...

1: can you please read resistênce between pin 11 and ground?

2: can you find a spot that have 0 ohm resistênce to pin 11?

it must be connect an pot with res= (1) between that spot (2)and ground

or find the smd resist. that make the resistênce you read on (1) and pencil it

i think, maybe wrong

[BeardyMan]

Strange the vdroop isn't working for me
Pencil mod that is....

Btw are the mods at teh first post all correct and working? wil try them tommorow

[Learn]

well ovp must be pin11 to ground :

http://i10.tinypic.com/5zblp2q.jpg

thanks to jonny bravo, http://www.ocxtreme.org/forumenus/showthread.php?t=1153

This one works. link

Config:
P5K
Revision 1.02G
BIOS 0603
vcore: 1.7bios
vdroop: pencil
E6600: vid mod, 1.40625v.

I removed the 681 Ohms resistor for testing the vmod.


With 165 Ohms: (and with the vdroop)


After 2.040v in the BIOS, 2.07/2.08v (DMM)


After 2.040v, no monitoring (maybe 2.1v DMM)


In parallel you need something like 217 Ohms for 2v in the bios (with the vdroop) so, 5k or 2k or 1k Ohms can do the job. PWM get really hot (my insulation on the back of the PWM melted! , CPU under 2 stages cascade, beware.