6. Half Life 2
Half life 2 is without doubt the most anticipated pc game of all times.
Physics - From pebbles to water to 2-ton trucks respond as expected, as they obey the laws of mass, friction, gravity, and buoyancy.
Graphics - Source's shader-based renderer, like the one used at Pixar to create movies such as Toy Story® and Monster's, Inc.®, creates the most beautiful and realistic environments ever seen in a video game.
AI - Neither friends nor enemies charge blindly into the fray. They can assess threats, navigate tricky terrain, and fashion weapons from whatever is at hand.
With games, the increased FSB in combination with the higher memory speed, boosted performance. Lower resolutions are a better indication since there is little demand on the graphics card.