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Thread: Help in unlocking AMD Phenom II X2 Callisto

  1. #1
    Join Date
    Feb 2011
    Posts
    115

    Help in unlocking AMD Phenom II X2 Callisto

    I am posing this so that someone can give me some way to unlock the AMD Phenom II X2 Callisto 545 3.0Ghz for the MSi 740GTM-P21 (MS-7302) motherboard to the Quad core. I know that this is possible but the problem is that I have not done that any time before so don’t have much idea about that. I have also searched on internet but not got the exact way to do that. If someone can help me then it will be really appreciative.

  2. #2
    Join Date
    May 2008
    Posts
    1,137

    Re: Help in unlocking AMD Phenom II X2 Callisto

    I will say that a new motherboard with voltage control must be started, fortunately I got the X2 550BE things went pretty well for me. I would be sure to update the BIOS if it occurs to be out of date. I was doing a lot of BSOD, I thought it was a demand for an unstable clock however, reset the CMOS, updating the BIOS, and what you know now I'm working with a steady 3.7-3.9Ghz OC .

  3. #3
    Join Date
    Feb 2008
    Posts
    1,260

    Re: Help in unlocking AMD Phenom II X2 Callisto

    If you ask me then I will never recommend you to unlock the 125W which is having the quad core for the MSI board along with the unheatsinked 4+1 power phase. You should not even think regarding this. This is just my recommendation to you. It’s your system, you can do whatever you want but my answer would be not to even try this. Thank you and good Luck!!!

  4. #4
    Join Date
    May 2008
    Posts
    1,295

    Re: Help in unlocking AMD Phenom II X2 Callisto

    I went with the 80 watt chip 555BE C3, the pair of low power with a 212 + cooler hyper my chip but trying to unlock the cores with a dual core. It is a bad idea 125watt, the heat of the thing might kill your board. Do not, just go to the clock speed, increase the FSB (since u do not have a chip BE), tested with OCCT stress test or similar and see how far you can go with stock volts, so if it is not enough (trust me there is no great quantity, is sufficient estoy@4.5 and that's not good enough) just increase the voltage until the overclock is stable for about six to eight hours.

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