How much alcohol would one have to drink before having significant brain damage?

This question is mainly directed toward to college students. I'm not talking about binge drinking to the point where you consume 10 beers at once and vomit or blackout, but rather having a few drinks one night during the weekend, lets say 7-10 beers over the corse of like 5 hrs just to keep a nice buzz going. If i drank said amount for one night on a weekend, between 2-3 weeks of sobriety, will my brain suffer any long-term effects? (i.e. impaired learning and memory)