Today we look at the latest high end power supply from Seasonic ? the Platinum 1050WXP3. This unit follows on from the success of the previous 1000W Platinum but brings some upgrades into the mix. The new unit has a pure copper bridge to improve high current conduction and a new IC added to the fan control based on hysteresis (http://www.lassp.cornell.edu/sethna/hysteresis/WhatIsHysteresis.html) to reduce the number of times the fan turns on and off.