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I5 3570k + 7870

Hello,
i would like to know if Cooler Master GX 650watts
or even the 550watts is enough to handle an i5 3570k + 7870.
i dont plan on doing crossfire.
i dont use ssd, only 1x 1tb hdd.
7 answers Last reply Best Answer
More about 3570k 7870
  1. The 550w should suffice though to be on the safe side I'd go for the 650w, will also allow you to overclock some.
  2. Best answer
    For a system using a single AMD Reference Design Radeon HD 7870 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 27 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

    Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important factor.

    Factory or manual overclocking of the CPU and/or GPU will require an additional increase to the combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock(s). The additional amount required will depend on the magnitude of the overclock you are trying to achieve.

    The Cooler Master GX Series 550W (RS-550-ACAA-D3 / RS-550-ACAA-E3), with its combined +12 Volt continuous current rating of 44 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 7870.

    The Cooler Master GX Series 650W (RS-650-ACAA-D3 / RS-650-ACAA-E3), with its combined +12 Volt continuous current rating of 52 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 7870.

    I would never buy a Cooler Master power supply because there are better quality ones available in the same price range.
  3. ko888 said:


    The Cooler Master GX Series 550W (RS-550-ACAA-D3 / RS-550-ACAA-E3), with its combined +12 Volt continuous current rating of 44 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 7870.

    The Cooler Master GX Series 650W (RS-650-ACAA-D3 / RS-650-ACAA-E3), with its combined +12 Volt continuous current rating of 52 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single Radeon HD 7870.

    I would never buy a Cooler Master power supply because there are better quality ones available in the same price range.


    thanks a lot for this info i really need comments about this psu. i was originally going for the 650 watts but i would just like to know if the 550 watts is still capable or still advisable.
    btw, i wanted to get this CM psu because theres a promo at this store where ill be buying my rig that would give me less 25$ discount if i bundle a CM case + CM psu. is it still a good deal?
  4. Best answer selected by magget.
  5. magget said:
    thanks a lot for this info i really need comments about this psu. i was originally going for the 650 watts but i would just like to know if the 550 watts is still capable or still advisable.
    btw, i wanted to get this CM psu because theres a promo at this store where ill be buying my rig that would give me less 25$ discount if i bundle a CM case + CM psu. is it still a good deal?

    The 550 is still more than capable for your intended system configuration.

    The RS-550-ACAA-D3 model made by Enhance Electronics is preferred over the now discontinued RS-550-ACAA-E3 model made by Seventeam.
  6. thanks a lot mate!
  7. This topic has been closed by Mousemonkey
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