Anyway, there was also said that you can get the kind of detail of those in those screens on a:
P4 2 Ghz
512 MB ram
Geforce 4 Ti 4400 128 mb
I'm just a little below that, but hey, almost my birthday, im gonna buy a geforce FX ;)
Here i have a $hitload of screenshots for you. They are all in-game screenshots. If the pix are too big, press F11 to go full screen in your browser. I can't wait its gonna be ****ing awesome. HL 2 runs on the V-source engine created by Valve. It sure kicks the crap out of the Unreal 2 engine...