brainpower

brain +‎ power

brainpower (usually uncountable, plural brainpowers)

1. Mental ability; intelligence.
2. Intelligent people considered as a group.
   • 2014 April 3, Joel Kotkin, “America's New Brainpower Cities”, in Forbes:

     “Brainpower rankings usually identify the usual suspects: college towns like Boston, Washington, D.C., and the San Francisco Bay area. And to be sure, these places generally have the highest per capita education levels.”