What's the most demanding game on pc?

[Brookstone]

2 years ago, I would have said Crysis. That's no longer the case, as it will do nicely on many new systems with a fair video card.

One of the most demanding recent games is Battlefield: Bad Company 2. The absolute minimum is a dual core processor. Though it mentions a 3 ghz Pentium D, just try running it without a $300 video card and an unoptimized system. BBC2 is one of the newer games taking advantage of Dual core (& I think quad core too)

Other recent games with heavier system requirements than Crysis: Bioshock 2, Assassin's Creed II & Call of Duty: Modern Warfare 2, although that one is pretty flexible.