I am considering a new computer very soon, and Dell has the option of either getting an ATI Radeon 9700 "Pro" or the "TX". What's the big difference? The only thing I could gather was that the Pro had a controller speed of 324mhz and the TX was 263mhz. Does that make much of a difference? The Pro is $180 more, is it worth it? Also, how does the 9700 compare with the nVidia GeForce4 ti4600, other than the fact that the 9700 supports DirectX 9. And does anybody know when the new GeForce will be coming out? Any help is appreciated.