A method and system for determining optimal operating parameters for conserving power of a portable computing device may include plotting a hypersurface in a coordinate system. The method includes defining one or more axes in a coordinate system, such as a Cartesian coordinate system, that impact power consumption of a PCD and which may be held as constants when applied as workloads on CPU. Then, at least one axis is identified as an unknown or variable which may be optimized for power consumption. After the hypersurface containing optimized values is created for various workload scenarios for the PCD, workloads corresponding to the synthetic workloads described above are applied to the PCD. Workload predictors, like a DCVS algorithm, are executed by the PCD and are observed and compared to the hypersurface. Parameters for the workload predictor may be adjusted based on the values from the hypersurface.