I have 2x7970,
with 32GB memory i still cant get over intensity 13.. going to intensity 14 chops my hashrate from 580 to 420...
this also aspire to my other rig with 1x7970 and 4x7850

Wonder how people are able to get beyond I13 on amd7xxx series...
All other rigs i have is tweaked intensity on (4x5870,3x6870,2x6970) works like a charm with intensity 16