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Older PSU. Compatible with Haswell??

I have a Seasonic M12II 520 watt psu that was purchased in early 2012 and would like to know if it is compatible with a Haswell (1150) motherboard?
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  1. Best answer
    spankmon said:
    I have a Seasonic M12II 520 watt psu that was purchased in early 2012 and would like to know if it is compatible with a Haswell (1150) motherboard?

    Yes, as long as you don't put it in advanced sleep modes.

    Hope I helped!
  2. Officially no, it is not Haswell compatible.

    It isn't anything to panic about though. It just relates to the low power consumption of the CPU when your PC is idle, some power supplies cant handle the low power draw. However this has been taken into consideration that most people don't have a Haswell ready PSU, so most motherboards now have this Haswell C6/C7 power saving setting disabled by default. Or If not you can disable it in BIOS yourself.

    http://www.legitreviews.com/what-enabling-c6c7-low-power-states-do-on-the-core-i7-4770k-haswell-cpu_2217
  3. It is not fully compatible with Haswell, but you can still use it. Just disable the CL6/CL7 power states in your BIOS.
  4. Thanks to all three of you for the quick replies. Now I don't need to buy another PSU... and can put the money towards something better.
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