To get similar graphics in a PC (or Mac) requires a $200 graphics card alone...now you see the point about your G3 being irrelevant to the discussion?
I didnt read the entire thread, so I appologize if Ive missed something here, but even an old $80 gf9600gt runs rings around both ps3 and xb360 in terms of graphics power. The price of pc gear these days makes it hard for even consoles to be price competitive in terms of performance. I enjoy my consoles on occasion, but in terms of raw power and graphics quality theyre completely and utterly destroyed by even mid spec pc gear (although it's a shame in some ways that games are written with the lowest common denominator (consoles) in mind as pc gamers often get little more than higher resolution/higher image quality versions of console games (little bit st-itis here)).