..........I hate these threads...all speculation by people who don't know crap. No I don't claim to know crap because I'm not a developer for the game either....heres the closest and probably most realistic expectations of the game specs found here:
minimum: 2.8GHz, 512mb Ram,Geforce6
for high details: 3-4GHz, 1Gb Ram, Nvidia 6800GT/ultra or 7800GT/GTX SLI
Dual-core Processor use: Multi-Threading is supported and should provide much better performance.
64 Bit version available with better textures
Renderers: Shader-3.0, Fallback-Mode for Shader 2.0 maybe a dx8 renderer.
Ageias PhysX Processor supported.
Quite far from 'ZOMG 7800GTX/SLI WILL GIVE YOU LOW SETTINGS!' that some of you are spouting out.
Those specs are also for top of the top...meaning maxed out resolution, plenty of AA, HDR, all other tiny tidbits of graphic goodness that you could possibly get.....ok....you can do the same thing in FEAR, however it'll still look just as good with it at say 2x AA, smaller resolution, etc..etc...
It'll no doubt be a demanding game, and it looks as though they'll make use of the PhysX and all that, but all this kiddy speculation and rumors going around are just freakin stupid.