Precision Boost Overdrive(PBO) is the AMD automatic overclocking solution for the Ryzen CPÚs. Initially released on the Threadripper HDT CPU's and should not be confused with Precision Boost what dictates the Frequency Range boosting table. It comes default on motherboards that have a design spec of 88w and/or 60A or higher using CPU's that have a 65W TDP or higher.