Actually, I've already tried raising it from 1.6 - 1.7. My system was fine and TQIT runs fine also but after 30mins of playing, the game just crashed! No warning whatsoever. This has not happened before, then underclocked it again to 1.68, game runs smoothly, as always.. didn't recognize much difference though.
Oh, I forgot to mention that my mobo is an ECS P4M890T-M and according to some of my friends, this model has its overclock function locked. so not all of the things you mentioned I was able to do. The only thing I was able to change was the FSB rate. from 200, I made it to 212. Will run a few more tests though..
