No, it's not worth it. ATI made the Radeon 8500 with similar performance to the GeForce3. They had a cheaper version called the 8500LE (underclocked/slower RAM). They renamed the 8500LE as the Radeon 9100, the 9200 was slower still, and the 9200LE is a 9200 with the RAM bus cut in half (from 128 bits to 64 bits).
I don't think it would beat a GeForce2. I'm almost positive it won't beat a GeForce4 MX440, and that's a DX7 card.
Oh, and 8x means absolutely nothing with that card, it's SO SLOW it would perform just as well in an AGP2x board.
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