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LGA1156 Clarkdale COLDBUG modifications!!


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These are modifications for other boards than the MSI and Gigabyte. I haven't tested them myself just yet, so PLEASE DON'T TEST if you don't want to. I don't guarantee these work, I'm just following the same methodology.


PLEASE confirm if it work!


Asus M3F



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though there is some way to fix clarkdale 's cold boot and bug

if your using LN2, then could help you down to lower temperature

the first mod is short PEG_Rbias. that pin you can find one cpu backside

and motherboard, so you just need to choose which one is easier for you



pencil ------- most of time not work, casue you didn't do it very well

silver pen -------------esier

solder ------------only work on motherboard mod, on cpu its too dangerous.


CPU Pin mod

short 2 pins (red spot)







P55A-UD6, P55-UD6, P55(A)-UD6©











P55M-UD2, P55-UD3L, P55-US3L, P55-USB3, P55A-UD4P, P55A-UD4, P55A-UD3P

P55A-UD4P, P55A-UD4, P55A-UD3P, P55A-UD3R, P55A-UD3, P55-UD4,P55-UD3, P55-UD3P, P55-UD3L-TPM

P55-UD4P, P55-UD3R, P55M-UD4, P55-UD3L, for other board belonds to UD3/P series, should be the same



Source: XtremeSystems

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PEG_RBIAS present on 1366 platform too, but related to IOH.


If anybody want try I can show :)


Tylersburg chipsets have PE0RBIAS (ball AN34), PE1RBIAS (ball AN13). these are hooked to GND with same 750ohm resistor.


But coz 1366 IOH is extra chip, not part of CPU package it may not be related to CB/CBB's.

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