SN41G2 Northbridge temps & max FSB

I am curious what the maximum FSB speeds people have gotten with
whatever setup. At 170mhz the northbridge is getting quite toasty,
not bad enough to hurt my finger but close.

I have lapped my northbridge heatsink and used AS3 on it in hopes of
reaching at least and FSB speed of 180. I later realized lapping is
quite useless for the northbridge heatsink since the nForce2
northbridge+IGP has a recessed metal core (no good contact anyway).