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Thread: Power Supply killing my overclock...?




  1. #1
    Join Date
    Nov 2003
    Posts
    49

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    I have a 400watt "Duro" PSU that is powering 5 cases fans, 2 hard drives, 2 cd drives, sound card, modem, AIW 9800 Pro w/ VGA silencer, and a oc'ed Athlon Xp+2500 cpu topped with a Volcano 12 HSF. Whenever I try to overclock my Athlon +2500 barton to a +3200, I crash periodically. The screen just turns into colorful horizontal lines and boxes. I tried raising the Cpu voltage and chip voltage a bit, and it gets even worst, It crashed even before windows finishes loading. When I raise it even more, it crashes during post forcing me to reset bios in order to fix it. Can this be a cheap PSU? If so, what watt cpu should I get for powering all these things, and which brand is best for accurate voltages.

    A7N8X Deluxe Rev 2 Bios v1007 Uber
    Athlon xp +2500 Barton Factory Unlocked (L12 Modded)

  2. #2
    Join Date
    Nov 2001
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    539

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    i run the same motherboard and cpu as you (just out of curiosity, whats L12 Modded in your sig about?)
    i run a Antec Smartpower 400w and i struggled with my 2500+ at 3200+.
    as for a new PSU, i would recommend Antec, say a 500w+ would be safe and you would have room for expansion.
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  3. #3
    Join Date
    Jan 2003
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    968

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    I have a Barton 2500+ on an A7N8X DX Rev. 1 with a 9800 Pro, and for lack of a better explanation, the 9800 Pro doesn't agree well with CPU overclocking, even with the AGP bus locked. From the symptoms you're describing, it's the GPU that's crashing. I had my Barton at a 3200+ before, but when I went to the 9800 pro from a Ti4200, I just couldn't reach the same OC and never did figure out exactly why. Make sure you lock your AGP bus in at 66MHz and try bumping your CPU up in the smallest increments possible. Good luck with it. :thumb:
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  4. #4
    Join Date
    Nov 2003
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    Thanks for the replys guys :lol: The L12 Mod is usually done on the factory unlocked +2500 bartons to make it more overclockable fsb wise, on nforce2 barods. The mod is done by making a cut on the third L12 bridge which makes the default fsb 100 instead of 166, because for some reason the nforce2 boards doesn't like it and won't go pass 190's mhz fsb. This link might explain it better http://www.sudhian.com/showdocs.cfm?aid=307 . And to Wordbiker, I really think this is more of a cpu problem because of the symptoms I have. Whenever I raise the fsb to 200mhz and mult to 11x @ lowest vcore 1.650 I can get pass the second game benchmark in 3dmark03 before I crash. When I go back to the bios and raise the Vcore to 1.700 I crash right before the first benchmark even loads. Then Again I tried raising it to 1.8 and thats where it crashes during post, cant even go in the bios. I thought more voltage = more stability :x
    So after all this, I thought it might be a bad PSU causing the unstability.

  5. #5

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    My PSU Limits my overclock on my video card and everything else.. I have a p4 at 2.4 "C' revistion.. a ati radeon 9600 pro, 2 hds, 4 case fans, sounc card, modem, 2 optical drives.. and all on 250 watts... my voltages are almost out of range.. and i have no money to get a new one. :oops:

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