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2 Graphics card & 4 HDD's > 500 watt power supply?

Discussion in 'Hardware' started by sorrow, Oct 2, 2011.

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  1. sorrow

    sorrow Thread Starter

    Joined:
    Nov 9, 2006
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    Hey folks, I've run into a weird problem and insufficient power is the only theory that makes sense to me so far, but I wanted to ask on here and see if there is something I'm missing.

    I've got a 500 Watt power supply, 3 HDD and on SDD running in my computer with a Core Two Duo 2.66Ghz processor. I recently upgraded my graphics card from an 8800GT to a GTS450 and then picked up a second monitor on craigslist. Initially I ran both monitors off of the GTS and took the 8800GT out all together, but then I decided to put the 8800 back in to power the secondary monitor, and that is where things got weird.

    After attempting several different cabling designs I finally managed to get both cards working... but the fan on the 8800GT wasn't spinning. At the time I didn't have the drivers for the card installed but I don't see how that should make a difference? Right now I'm back to both monitors running on the GTS, which handles the load fine... but I would still prefer to spread it out among the two for gaming reasons.

    Thanks in advance for any and all help & ideas!

    Bonus question: Somewhere along the way my BIOS / CMOS forgot the day and time even though the battery is still fine, and it no longer boots into the OS without me manually selecting the SSD on the boot device list even though it still has boot flags set. Ideas?
     
  2. Oddba11

    Oddba11

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    Jim
    Two different cards will have no affect on gaming performance. The reason for multiple cards is to drive multiple monitors (ie: if a single card doesn't have enough ports). Most games default to the primary display and will not scale across multiple cards unless you are running SLI or Crossfire.

    Power supply quality is more important than the size rating. On top of that, you need a power supply with multiple 12 volts rails and adequate amp rating on each rail to support the devices that you are connecting. With all of that said, a quality 500w unit may be adequate, anything less is likely under powered.

    Try manually clearing the CMOS and/or restoring to factory defaults. Then making any adjustments needed for operation. Loss of time is typically a sign of a battery issue, aside from that it would be a motherboard or corrupt BIOS problem.
     
  3. Triple6

    Triple6 Moderator

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    Rob
    I doubt a 500 watt PSU is enough to run that setup. I don't see the need for two graphics cards to just run two monitors, a single card will do that fine.
     
  4. sorrow

    sorrow Thread Starter

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    Nov 9, 2006
    Messages:
    92
    Sad, I was hoping that wasn't the case but thanks for confirmation!
     
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