it's a server pc, with a 3.7 gig quad,running 2 sli 8800gtx's in their, 4gigs of ram,water cooling,1000 watt psu.
its not a server PC. its Q4 2007 mid level gaming PC.
If they wanted to go OTT, why not use ALL dev hardware and an nV Optiplex or whatever it is called...
Intel wanted everyone to cream themselves over the power of kentsfield, it was overclocked because at the time intel were trying to get back into the homes of all the people that had been on A64 for a long time. The game will probibly need a quad core to run in all its glory, the 8800GTX's are standard issue for high end gaming PC's, they are now the price of a X1900XTX about 2 months after launch. You must remember, it was about Intel and MS promoting Quad core + DX10 as it was Remedy promoting Alan Wake.
by the time the game is out the common gamer pc will probibly be quad core anyway, it will also be DX10 as standard.
PS. speculation is fun, theres no point having the internet without having people who want to push boundries :)