New power supply?

By chlorf
Aug 6, 2005
  1. Do I need to replace my two-year-old power supply and/or case to install an SLI motherboard with Pentium D?
  2. nein

    nein Banned Posts: 226

    Power requirement for SLI slots RIGHT HERE, add 75W per slot to your supply calculation (3.3V => 6A more, 12V => 11A more).
  3. chlorf

    chlorf TS Rookie Topic Starter Posts: 21

    I don't understand that, so I'll just get the cheapest 500W power supply I can find. That should be OK, right? Also, do I need a new case or cooling system?

  4. DonNagual

    DonNagual TechSpot Ambassador Posts: 3,566

    Highly recommended that you do NOT get the cheapest power supply you find. It would be much better to get a high quality 400W (for example) over getting a cheap 500W. Cheap power supplies have to be one of the top problems people have, and causes strange system failures from an unbalance power distribution.
  5. chlorf

    chlorf TS Rookie Topic Starter Posts: 21


    Well then, to be safe I'll get the most expensive 600W power supply I find. But will the same old 3 fans and case meet my newly awesome system's requirements?
  6. DonNagual

    DonNagual TechSpot Ambassador Posts: 3,566

    Depends. If your new motherboard is an ATX motherboard (which most SLI boards are, if not all...??), then you just have to be sure your case is also ATX capable.
  7. chlorf

    chlorf TS Rookie Topic Starter Posts: 21

    Thanks a lot! This information is extremely important!
  8. PanicX

    PanicX TechSpot Ambassador Posts: 830

    Most SLI boards require ATX12V v2 compliance. Check that the PSU you purchase meets this requirement if your motherboard needs it.
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