The data integrated into XPE with this designation is released after enough production silicon of a particular device family member has been characterized to provide full power correlation over numerous production lots. The characterization data for all blocks in the device fabric is included.
The accuracy of any power estimation is derived from the information input to the models. Report Power uses the following models based on the device characterization:
- PREVIEW
- +/-30%
- ADVANCE
- +/-25%
- PRELIMINARY
- +/-20%
- PRODUCTION
- +/-15%
These models are accurate as the Xilinx® Power Estimator. However, Report Power has more details on the design being implemented such as resource settings and usage, net fanout and net lengths which impact the power estimation of a design. This allows Report Power to give more accurate estimation. However, it is still dependent on your input as the confidence level of the estimation is critical. PRODUCTION characterized model with LOW confidence level should be evaluated and improved to ensure more accurate estimation.