Question about Foxconn 661MX Motherboard

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CPU throttles for No Reason!

Hi, I noticed my Pentium 4 CPU throttles down from 3.0GHz to 2.0GHz for no reason, about 95% of the time. I could reboot my computer to restore the CPU clock, but it throttles down again eventually. Needless to say, it's the problem that I've narrowed it down to that's my games to run slower.

I'm using a Foxconn 661MX Plus Motherboard (the one with a SiS 661GX chipset). I'm also using a 550W power supply.

I already ruled overheating out (I put 3 fans already on my Scythe Ninja Mini CPU heatsink and put Arctic Cooling MX-2 thermal pasted). Temps are 50C idle and 60C on load [no matter of ANY external temp]. I also updated EVERYTHING (BIOS included) to the latest drivers. Using Windows XP Pro Service Pack 3. Tried messing around with some of the BIOS settings (such as HyperThreading off) and resetting CMOS sometimes, but no fix.

I've been trying to fix this problem the whole summer. Any help is greatly appreciated. Thanks!

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  • thuganomigs Jul 30, 2008

    I forgot: you can rule out adware/spyware, etc. from here, too. This happens even with a fresh install of Windows.

  • thuganomigs Aug 12, 2008

    Thanks for the advice, but it's the power supply. I asked two other tech support guys and they agree that it's the motherboard that's defective.

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Turbo-Cool makes a better power supply then all the rest . For total happiness even if you use two PCI-16 video cards ( CrossFire Ready, SLI Ready ) Turbo Cool 860-Watt Power Supply .

Posted on Jul 30, 2008

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