Hello, my computer has been acting up recently and I wasn't sure if maybe it was because my power supply was to low. I am about to get a new graphics card, a Radeon HD 6850, do I need a new power supply as well? My Power Supply is 350w. If your wondering how my computer is acting up, this is how. http://www.youtube.com/watch?v=BDNIugQjI0A&list=UUqR797Z6EaVIZ9plfeHJVdw&feature=plcp Other specs. -8 gigs of ram. - AMD Anthlon II X2 255 Precessor 3.11 GHz. -Windows 7 64-bit - NVIDIA GeForce 9400 GT (upgrading to Radeon HD 6950) The reason for this upgrade is mainly for Battlefield 3.