I have a Ti 4600 and WONT be changing for at least a year! I'm sure I'll be able to run Halflife 2 just fine
I also think that many people might want to wait and see how well their current systems will run these games. Personally I am going to upgrade, but that's just because my system - P3 700mhz oc'd to 933mhz / Ti4200 (oc'd as well) - is just plain too old. Even with my creaky system I was able to run the D3 leak well enough to look around the thing.
One word of advise... if you're going to upgrade your system just for one of these games, wait till the game is actually out. I made my computer for Tribes 2 and bought the parts so I would have them just in time for the "planned" release date. Of course that got pushed back by months and it turned out I could have saved a lot of money had I waited.
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Hi, my name is WarPig and I have a drinking problem... two hands and just one mouth.