satyanjoy
Explorer
It has been discovered that a number of power supplies currently on the market don’t support Haswell’s C6/C7 low-power states due to the fact they are unable to deliver less than 0.05 amps across the 12V2 rail according to a report from VR-Zone. Haswell’s C6/C7 states requires a minimum load of 0.05 amps on the 12V2 line. Power supplies that are older or budget models simply aren’t capable of delivering such a small amount of juice. As a result, users with incompatible power supplies may experience stability problems or worse, the system may shut down completely if the PSU’s under- or over-voltage protection kicks in.
http://www.techspot.com/news/52423-...-support-haswells-c6-c7-low-power-states.html
http://www.techspot.com/news/52423-...-support-haswells-c6-c7-low-power-states.html