Sorry, really I should have posted the "solution"... the trick is explaining it with text-only
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I used a trick almost identical to the hack of the FIC PA-2012 mobo.
Here's the method:
The voltage regulator jumpers look like a row of say 6 double pins. A jumper in these pins selects 2.7V , 2.8V etc. There are resistors placed aside the pins in the PCB.
This is a sample:
-R5--o o-- 3.5V
-R4--o o-- 3.2V
-R3--o o-- 3.0V
-R2--o o-- 2.8V
-R1--o o-- 2.7V
All we need is a multimeter to measure the resistance of each resistor. Then we plot V vs. R in Excel we see that lower VCORE needs higher Resistance and use the graph for extrapolating (log function) the resistance needed for 2.2 V (K6-2 VCORE).
Sample: if the extrapolated calculation gives 2.2V = 560 ohm and the resistor aside the 2.8V jumper, for example, is 230 ohm, all we need is to attach a 330 ohm resistor closing the pins of that jumper (230 + 330 = 560).
For details check this link:
_http://www.geocities.com/hackedmobo/pa2012/pa2how.htm#top
The ASUS P/I P55-T2P4 mobo also features that 5 row-double pin VR, but works in a different way, and it's much easier to hack
_http://www4.tomshardware.com/howto/00q3/000725/
_http://www.jump.net/~lcs/kalle/
Also useful this one:
_http://surf.to/ga586hx
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