Originally Posted by DesertRat
AS5 while good thermal compound is no longer the best.
I prefer OCZ Freeze, Shin-Etsu X23-7783D, and IC7. OCZ Freeze is the most affordable and easily found of those, and IC7 the best performer AFAIK.
Out of those, Shin Etsu is the best. MX-3 is nearly on-par, though, and a better value.