I bought my new computer: Asus HD4850 512mb 4gb DDR II 1066 AMD Phenon 9950 Power Supply OCZ 600w Im having problems with almost all the games crashing to desktop or getting blank/black screen after a few minutes. I install ATI drivers, not the ones from ASUS. World of Warcraft WOTLK is imposible to play with direct3d. I have to start it in OPENGL. GTA IV crash to desktop at the beggining Farcry > black screen after a few minutes. I will tried Crysis, Farcry2, COD5, and BioShock. Today I received a new Graphic card after a RMA. I will tried it. I have a question, My PSU can handle my new system? (see system spec in my profile) The graphic card will use the same power running games in Direct3d or Opengl?