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Thread: Can too small a power supply cause slow operation?

  1. #1
    Join Date
    Oct 2006
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    Jacksonville, Oregon
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    Can too small a power supply cause slow operation?

    It could be my imagination, but I'm positive that my PC is operating at least thirty percent faster after I installed a new 500 watt power supply to repace the 350 watt one.

    I have an AMD 3000, with 7 fans altogether. I doubt the 2nd hard drive is much of a factor.

    Is it possible for a computer to operate slower if the power supply is small or too small?

  2. #2
    Join Date
    May 2005
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    You have 7 fans but only 2 hard drives? Are you doing some serious overclocking? Not sure why you'd need that many fans otherwise. I suspect this is the PC you mentioned with an lcd monitor attached. Did you jump the power off the PC, or do you use two power cords? I don't know if jumping the AC would be a problem due to added current, but the question did pop in my mind. I don't see how that would impact PC speed though.

  3. #3
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    Oct 2006
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    Jacksonville, Oregon
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    Quote Originally Posted by pangea33 View Post
    You have 7 fans but only 2 hard drives? Are you doing some serious overclocking? Not sure why you'd need that many fans otherwise. I suspect this is the PC you mentioned with an lcd monitor attached. Did you jump the power off the PC, or do you use two power cords? I don't know if jumping the AC would be a problem due to added current, but the question did pop in my mind. I don't see how that would impact PC speed though.
    The monitor is using it's own power cord plugged into the surge protector.

    The 7 fans is just the way the case came - not a big case really. 4 fans are on the front under the hard drives, one on the side, a tiny one on the back, and the CPU fan.

    Actually the power supply fan is the eigth.

  4. #4
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    An inadequate PSU can have damaging effects on your hardware. It can indeed cause underpowered operation of some components. Although, if your old PSU was 300W or more, I can't imagine why the system would seem faster with a new 500W PSU.

    Still, I've seen stranger things happen...

  5. #5
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    One thing I can vouch for, is increased stability.

    An adequate sized power supply (or better) can greatly increase the stability of your system.
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  6. #6
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    I had a noticeable increase in performance and overall stability when I replaced an inadequate PSU with an Antec TPII 550 on my personal system. And it definitely increased my OC'ing ability. It even reduced boot time. But nothing near a 30% boost in performance though.

    Perhaps if your old PSU was a cheap bundled with the case PSU and your were sucking everything it had in it to power your system, it could seem like night and day with the new one. Kind of like walking out of a steam room and taking a deep breath of fresh cool air.
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