The new C6/C7 power states on the Haswell-Shark Bay platform will require the system power supply to be able to maintain a minimum current load of 0.05Amps on the CPU exclusive 12V2 rail (0.6W). http://vr-zone.com/articles/is-your-power-supply-ready-for-haswell-/19848.html?utm_source=feedly
Note the .05 amps.... or .6 watts... that is the killer!
per this review, minimum output (.6 amp)
and shows that the minimum 12V output is (Min -12V Output Current (A) : 0.3) .
Not the .05 amp standard for Haswell....
So no.. it doesn't look like that PSU is 100 percent Haswell C6/C7 state compliant.... based on the standard of minimum 12V .05 amps needed, versus the actual 12V .6 amps or .3 amps shown.
Interesting writeup: http://coolermaster-usa.com/press_release/haswell/haswell.html
From this writeup June 4 2013... http://techreport.com/review/24897/the-big-haswell-psu-compatibility-listXFX
Here's the word from XFX on Haswell compatibility:
XFX power supplies use a +12V design that allows for a minimum of 0A so they will not have an issue with the new low power sleep states allowing the CPU to enter deep sleep mode without any problems. XFX manufacturing partner Seasonic in conjunction with Intel have worked together to confirm that all XFX Pro Series PSUs listed below are compatible with Intel's new 4th generation Core processor family for new CPU upgrades to current systems and future new builds.
And here's the compatibility list:
Pro Series Core Edition: PRO650W, PRO750W, PRO850W
Pro Series XXX Edition: PRO650W, PRO750W, PRO750W, PRO850W, PRO850W
Pro Series Black Edition: PRO750W, PRO850W, PRO1050W, PRO1250W
Pro Series Black Edition: Limited PRO1000W
The firm adds that its XFX Pro Series 450W and 550W units are not Haswell-ready. However, XFX is "working closely with Seasonic to develop a new 550W Gold Pro Series PSU that will be compatible later this year."
Disclaimer: I am not a PSU expert... and don't claim to be. I am sure that some of the others here could give you a much better explanation / answer... hopefully someone will! Edited by cgipson1 - 3/20/14 at 8:15am