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Can my 500w handle an r9 290 and an i5 4570

I asked the same question about two hours ago except with the FX 8350. But I hear that intel is more power efficient so I was wondering if this would work.

Thanks in advance :)
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More about 500w handle 290 4570
  1. Best answer
    It would depend on the make/model of 500W PSU. But even with a good quality, you are not going to have any headroom left over. Definitely no OC'ing.
  2. If this is your PSU: http://obrazki.elektroda.pl/7867311200_1393001565.jpg
    ...it has good specs. +12V rail rated at 45A and 444W. But OCZ is not know for their high quality PSUs. You can probably get by with using it. But I would consider an upgrade in the near future.

    But if you are considering upgrading your CPU and motherboard, why hesitate on the PSU too?
  3. I haven't used math in so long that it hurts to do this.

    Formula for PSU Wattage recommended: (Max TDP of Processor + Max TDP of Graphics Card) * 2

    Formula for PSU Wattage minimum: (Max TDP of Processor + Max TDP of Graphics Card) / .6

    Formula for PSU Wattage headroom: (PSU 'Rated' Capacity * .8) -(Max TDP of Processor + Max TDP of Graphics Card)

    Recommended for FX 8350: 750W or 850W if overclocking (since it goes into amps with overclocking)

    The FX 8350 has a max TDP of 135 Watts and the r9 290x has a max 300 TDP of Watts. 435 Watts is 51% of 850W Quality PSU's maximum 'rated' capacity so there is a remaining headroom of 255 Watts (680 - 435).

    The FX 8350 has a max TDP of 135 Watts and the r9 290x has a max 300 TDP of Watts. 435 Watts is 58% of 750W Quality PSU's maximum 'rated' capacity so there is a remaining headroom of 165 Watts (600 - 435).

    Recommended for i5 4570k: 750W or 850W if overclocking (since it goes into amps with overclocking)

    The i5 4570k has a max TDP of 84 Watts and the r9 290x has a max 300 TDP of Watts. 384 Watts is 51% of 750W Quality PSU's maximum 'rated' capacity so there is a remaining headroom of 216 Watts (600 - 384).

    The PSU should never be pushed past 60% at normal load for wear and tear as well as efficiency and/or past 80% at maximum load for long periods of time. However these measurements only apply if you are a getting a -Quality- power
  4. Its only rated for 444W on the 12V rail. its also got pretty bad voltage regulation and an old two rail system that could be overloaded depending how the connectors are wired. Will it probably work? yea. Would I trust MY new $400 GPU to an old bargain basement $30 OCZ PSU? absolutely not.

    www.kitguru.net/components/power-supplies/zardon/ocz-power-supply-roundup/6/
  5. Basically with your rig, you'll want a good quality 550 or better with about 32 AMPs on the 12 volt rail... That will give you OC room and room for add ons
  6. Wow thanks for the really detailed answer, a well deserved best solution :)
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