Enabling performance features for voltage limited processors

A computing device, comprising:

• monitoring logic configured to calculate a set of headroom values by calculating a headroom value for each operational constraint in a set of operational constraints of a processing unit;
• selection logic coupled with the monitoring logic and configured to, in response to detecting that the processing unit is operating in a voltage limited state and based on the calculated set of headroom values, select from a set of performance features a subset of one or more performance features for enabling in the processing unit;
• and
• enable logic coupled with the selection logic and configured to enable the selected subset of performance features in the processing unit.

A computing system, comprising:

• a set of one or more processor cores in a processing unit;
• and
• a system management unit coupled with the set of processor cores and configured to, in response to detecting that the processing unit is operating in a voltage limited state:
• calculate a set of headroom values by calculating a headroom value for each operational constraint in a set of operational constraints of the processing unit,
• based on the calculated set of headroom values, select from a set of performance features a subset of one or more performance features for enabling in the processing unit, and
• enable the selected subset of performance features in the processing unit.