Ok Half-Life 2 is practically the reason I'm upgrading my CPU to an AMD 2500+, Soltek SL-75FRN2-RL, Kingston PC3200 Value RAM 2x256, ATI Radeon 9800 Pro, and 480W AntecTRUE PSU. I was reading somewhere that Half-Life 2 said that 512MB of memory is reccomended, but you "hardcore" types will want a gigabyte. They also reccomended a P4 2.8, but hey they're just trying get you to upgrade and buy products from ATI ever since their little partnership with the XT cards.