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  1. #1
    Senior Member F.O.G.N.A. is on a distinguished road
    Data Registrazione
    May 2008

    MSI Big Bang X-Power ocp - pwm

    Solo per la prima revision della mainboard.

    First up is the input power from the 8-pin connectors, which is capped at about 30A by one single choke. Just solder another one in parallel to increase this limit.

    Then there's of course OCP, which is at 200A from factory, with a 82.5k resistor. Just change to a resistor with lower resistance, 40k is 400A, which should be enough. Or just short the damn thing to get rid of it altogether.

    Another useful thing to mod might be the PWM switching frequency, which is set to 250kHz, although you may benefit from a bit higher frequency under LN2 runs. MSI itself recommends about 600kHz, which is achieved by changing the resistor shown to a 12k one. Just don't use 600kHz for 24/7 use on air, since the VRMs tend to produce quite a lot more heat than at 250kHz.

  2. #2
    Amministratore Delex ha disabilitato la reputazione
    Data Registrazione
    Oct 2007
    Aggiungo il link all'overclocking focus che ho fatto tempo fa:



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