4.1. Arria® 10 EPE - Common Worksheet Elements
Total Thermal Power
The Total Thermal Power field estimates the total thermal power consumed by all FPGA resources in the specific worksheet. Some worksheets may also provide a breakdown of the components contributing to the Total Thermal Power.
Most worksheets contain one or more fields that provide an estimate of the percentage resource utilization for the modules in the specific worksheet. Such values are calculated based on the maximum available resources of a given type for a selected device. If resource utilization exceeds 100%, the value is highlighted in red to alert you that the current device may not be able to support the resources entered into the worksheet. Additionally, the thermal power value displayed in the Main and Report worksheets is displayed in red for any worksheet whose utilization exceeds 100%.
Power Rail Current Consumption
Most worksheets include a table showing the dynamic current consumption (and standby current consumption, if applicable) for all power rails used by the FPGA resources in the specific worksheet. The same power rail may appear in multiple worksheets, and the total dynamic and standby current in the Report worksheet is the sum of all corresponding currents for a given rail at a given voltage in individual worksheets. The Report worksheet also includes static currents, which are not reported in individual worksheets.
Why Typical Power Might Appear Larger than Maximum Power
Due to the methodologies employed by power modeling, instances can occur where the typical power for an Intel® Arria® 10 device may appear to be higher than the maximum power. Every Intel® Arria® 10 device is tested during the manufacturing process; this testing includes measuring the maximum static current drawn by each device rail, and total static power consumed across all rails. A given device does not draw maximum current on each rail simultaneously — consequently, the total static power actually consumed by the device in operation, is going to be lower than the sum of the individual maximum static powers measured for each rail.
The Report worksheet (and the Intel® Quartus® Prime Power Analyzer per-rail report) indicate the maximum per-rail static currents based on actual measurements, to help you choose appropriate voltage regulators. However, when calculating total thermal power and total static power, we make more realistic — and generally lower — assumptions for total static power across all rails.
Maximum power values are helpful for determining the proper regulator size for power delivery, and the proper thermal solution for cooling, to ensure operation to published specifications.
Typical power values are helpful for estimating average battery life or total cost of ownership. Typical values account for variations in process and are not based on real measurements of individual devices — they are not guaranteed values.
Instances can arise where the typical power reported may be larger than the maximum power. This aberration is a consequence of the modeling methods used, and is not indicative of an error.
Errors and Warnings
Error and warning fields are used to display error and warning messages alerting users to issues with the information entered into this or another related worksheet. If there are error messages in the current worksheet, the thermal power value displayed in the Main and Report worksheets corresponding to the current worksheet will be highlighted in red to indicate an error message. For accurate power estimates, all error messages should be resolved.