My results--
3DMark 2001 score increased by 231 points... well within MadOnion's quoted margin of error for 3DM2001.
Performance under NHL2002 improved by about 2-3 FPS.
Text quality in Civ 3 seemed noticeably worse

Slight rendering artifacts during spellcasting in heavily crowded areas in BG2.
Locked the system with a full kernel dump pointing the the n4_disp driver file when starting any game under Project 64 (N64 emulator)
All the other apps/games I tested showed no real difference between it and the 29.60's.
I'll pass on them for now.