CVar predictedPower

It's best to leave this CVar enabled, as it can cause weird bugs like DK runes not activating as of 4.0.3a

Whether or not to use predicted power values in the UI.

Default setting

 * 1

Possible settings

 * 0 :Disabled
 * 1 :Enabled

Changing this setting
In-game, type the following /console predictedPower setting

Alternatively, you can exit wow, open the Config.wtf file, and add the following line: SET predictedPower setting