I've read that the HD 3850 will run just fine on a 350W power supply , which is what I have.
Power sucking components are:
AMD 64 4000+ CPU
2 Gig Memory
160 Gig HD
I have an external self-powered USB hub for peripherals (ie joy stick , printer and anything else I may plug in occasionally such as a camera)
Do I need to upgrade the PSU for this video card?