There are a lot more flashlights than CPUs. I may own flashlights from more makers than there are CPU manufacturers. My experience is that the output, current draw, and runtime are less important than other things, output being among the least these days.
A light the size of my smallest finger can do 100 lumen for half an hour. 100 lumen used to be "Search and Rescue" brightness for a portable light. FlashlightWiki gives a good overview, though.