There would not be any other requirement than the one that mentioned. You may check the list of power supplies that has been available on the article below or check with your power supply manufacturer directly to check for compatibility tests done from their side:
I know, list is not full, many PSU are not tested, Chieftec Nitro II should use CWT ::Channel Well Technology::
which are used by Corsair, prolly Thermateka and many other..... so that mean none of those are non compatible also
Also i have only some Cooler Master, Chieftec and Seasonic PSU available here in Serbia
and look at list from CM??????????? like ALL are compatible
I could bet they did not test their PSU with Haswell and i just mocking intel
How did you get on, did you buy a new PSU? has the problem been resolved?
Yeah i bought seasonic 750xt3, no problems at all...
Dude thank you for the update! I've had the same problem and tried disabling C6 - C7 etc.. none of it works. I've also found if it goes into sleep I lose the system then also.
I guess Im in the market for a confirmed supported PSU.
Thanks again for the update!