Its been said that it provides 80% more light? Check out the product page

http://www.nam.lighting.philips.com/...tremepower.php


X-treme Power

Introducing the new world champion in high performance headlamp upgrades. Philips X-treme Power bulbs deliver up to an astounding 80% more light than standard halogens, yet they’re DOT legal and come with the same quality and performance we put into the lighting we sell to OEMs around the world. X-treme Power is a new “must-have” for tuners and high performance drivers.