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Graphics card for comp running to a TV

Last response: in Graphics & Displays
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January 29, 2009 9:03:31 PM

I just recently purchased the Gateway dx4720 from best buy
and it came with a POS graphics card. I have a 26" Westinghouse LCD TV as my monitor (I purchased the best monster cable to hook it up) My TV is HDMI and is 1080 but is currently running at 720 because the resolution wont go beyond 1176x664. I tried higher resolution but the screen would black out and appear very small and shake. My current video card is NVIDIA Ge-Force 7100/ NVIDIA nForce 630i. I didnt know how to check my power supply but it is a new computer so i found that it is 300 watts from

i gathered that it was the biggest flaw of my computer. So what is the next step? I am an occasional gamer and i am willing to spend the money to make it look good, but dont want to spend more than 300$. I appreciate any help you could give me.
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