Picked up a 6800GT with the P4. A lot of money yes, but geez, that thing is amazing. It overclocks to Ultra speeds, and runs Doom3, Far Cry etc on Very High settings with no problem.
I agree, nothing wrong with Alienware. I was going to get one of their computers, but realized that by building one myself, I could save at least 600 dollars.
And it looks like I could have saved more by waiting 2 weeks. Can't find the receipt for the chip.