Better.
-> http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107.html
And with a few possible exceptions, if your power supply was up to driving a 9800, it should be fine for these.
Bob
I am wanting to replace the Nvidia cards in my Dell XPS 630i, but I'm not able to find the same card. They are NVidia GeForce 9800 GT cards. When I search Dell's product site for them I keep getting a PNY 680 or something like that. Is there some kind of conversion info somewhere for this?

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