I just purchased a ZT Systems desktop with an AMD Pentium II x4 955 (3.2 ghz) processor. The system has 8g ddr3 and a 1.5t 7200 rpm drive and AMD 760G/SB710 chipset. Unfortunately the system only has onboard video (ATI Radeon HD 3000) and a 300W power supply. I have 8 channel audio capability. I really don't want to change the power supply because of warranty concerns. Is there a graphics card you can suggest that would work with the limited power and which will give me reliable 1080P w/sound to my home TV? I have an available PCIe x16 slot available (as well as one PCIe x1). I have no problem adding a fan if necessary if that would help. I'm not a gamer but I'd like a display that would match the attributes of what I think is a pretty nice system. I have two HD monitors, also, w/ dvi input. I'd like to have HDMI, DVI and Dsub connectors. Please keep in mind that in the near future I plan to add a TV tuner card and use the computer as a media center. I also need some suggestions on the tuner card. I would like to use the computer as a DVR. I don't want to spend any more than necessary on these cards but I also don't want to skimp and be sorry later. Thanx for your suggestions.