Ubisoft will only put out a product that the mass public has a chance at being able to play on their home pc. Otherwise no one will buy it because they won't be able to play it. Right now the average computer is a duel core with a gig of ram in it, with an onboard pc express graphic card. I suspect a system like this will be the minimum REQs. If you want the game to run like a champ you'll probably need a quad core with 2 gig..
think back when SH4 was released it used the last of the AGP 8x tech and it took a pentium 4 with 1 gig as a minimum req.. So you have to allmost double that for SH5 I would imagine. But the old sayin goes will just have to wait and C