ASUS K8N Vcore mod

[owies]

hi again :D

i`m back with fresh mod for ASUS K8N, it was done as "remote control" :p: coz one of my friends (OCMaster) start FC and still wants more and more...
he can`t find reday solution on web so decide to ask me ...and here it is:

On this asus mobo Vcore section has 3 phases, master divider is ADP 3166 [pdf] (http://www.analog.com/UploadedFiles/Data_Sheets/2386148ADP3166_0.pdf) produced by Analog Devices, his slaves are 3 smal chips ADP 3418 [pdf] (http://www.ortodoxism.ro/datasheets/analogdevices/403053493ADP3418_prc.pdf) (one for phase) also by Analog
The 3166 can take 4phase system so... ;)
http://img71.echo.cx/img71/8562/adp31661pc.th.jpg (http://img71.echo.cx/my.php?image=adp31661pc.jpg)
As you can see mod depend on solder between pin 8 of ADP 3166 and GND wires with conected VR (best is 50k), (pin 8 -> FB is used for sensing and controlling the output voltage) Raising from max (50k) to min resistance geting higher Vcore voltage. For max VR value vcore should be boosted around ~0.06V
Maybe the OCP mod will be needed, now everything works fine :banana:

I can post only teory pic, OCM borow his dig to grandparents :p
here can see chips and read point:
http://img71.echo.cx/img71/5392/asus4uv.th.jpg (http://img71.echo.cx/my.php?image=asus4uv.jpg)

original here: art on Hardtech.pl (http://hardtech.pl/index.php/mode/articles/id/17) and here: forum (http://forum.hardtech.pl/index.php?showtopic=461) of coz in polish :p

enjoy :D

[Poy]

Hello, the component adp3166 has a security has part of 2V. I have
reussy has to increase the vcore has 1.95V with this same chart.
With a resistances of 25kohm

http://img246.echo.cx/img246/5721/2001123119h05voltcore7en.gif

[owies]

you cen`t get more than 1.95V correct?
propably the OCP mod is needed, i`ll try to find way for pass this ...but maybe tommorow.

btw, i find now Persivore who have done this first while ago here (http://www.xtremesystems.org/forums/showthread.php?p=829655#post829655) :toast:

[Poy]

sorry but I am French and I does not include/understand perfectly
what you said. My vcore is well has 1.95V by connecting pin 8 has the
ground with a vr of 25kohm. The maximum of the component is 2V.
After it y' has cut the motherboard. would find You here the necessary
one : Vdimm, Vchip, Vldt, and Vcore (http://www.amdhardware.com/phpBB2/viewtopic.php?t=4525)

3400+ @2840mhz with 1.87V (http://img135.echo.cx/img135/7827/2840wahoo3he.jpg)

[Poy]

what the OCP mod?

[owies]

spox, im polish so... also have problems ;)
OCP -> OverCurrentProtection
nice theard :] I will try to find solution for this problem

[Poy]

2V should not be exceeded. Is this that which you wanted?

[owies]

yes "should" ;) that`s only teory.
I can tray do it, but not test it, can work only remote for other users with this mobo

[UTF Nigtmare]

Thanks guys :)
That's what I need
I finaly found one :woot: :woot:

[Poy]

hello
has you make all the MOD?

[UTF Nigtmare]

Not yet, I need de pots now and then it would be fine :)
But one question: is de "Read point on missing + cap" the point where I can test the voltage?

[Poy]

hello, i'm french...


http://www.amdhardware.com/phpBB2/viewtopic.php?t=4525



http://img212.echo.cx/img212/3220/zoompointdemesurevdimm7qp.jpg http://img212.echo.cx/img212/8098/zoompointdemesurevhipvldt3tr.jpg



the vcore is visible since the bios