IMO steer away from intel and use the cash u saved to push some more ram
Honestly, the cheapest A64 I could find was $142 (wasn't it like $130 a week ago?), so that's why I picked the P4

2) Using less than 1Gb for the latest games is kind of a joke.
I'd probably pick a 6800GT over the 7800GT and put that money into another 512 of RAM
1) If your mobo is designed to have paired RAM and you only use 1, it will be slower than what it should be.
I didn't even think about it that point, thanks for pointing that out

Now for my woot of happiness: woot woot!