Hot. Mine is not yet in a case (being modded ofcourse :) but flat on the desk and with the original AMD HSF which doesn't give the NB HS any airflow what so ever it runs hot. Well I can hold my finger on it for like 10 seconds and with just a tiny bit of airflow it gets cool to the touch. This is w...

How hot is the NB heatsink on this mainboard?

I currently have an Asus m2a-vm, and its NB gets hot like hell... so I'm searching another one which doens't run quite as hot.