<< RAMBUS is suck, I'm afraid. That said, the P4T-E is a rock solid mainboard.
Personally, I'd look at an i845D / SiS 645 solution. Then again, since you already have a couple RDRAM modules...
As for the GF4 Ti4600 ... YEAH BABY! 😀 >>
hehe...really, RDRAM is great, but its rambus (as in the company) which truly 'is suck' 😛
if only it was an open standard, RDRAM would 0WN!! 😀