Need help with Hercules 9800 pro.

Hi guys. I am very disappointed with my new Hercules 9800 Pro card. I got the card of ebay for decent price. I went for hercules because I just loved my Hercules geforce 2 ultra card which broke down. After installing it and installing the latest drivers, I only get around 7-13 fps with max settings in Nba Live 2005, Madden 2005. On Medium settings, I get around 21-27 fps. My system is P3-600, 320mb ram, windows xp (sp 1). I mean i know i have an old system, but with this powerful video card I would expect much more, since I don't really notice over usage of cpu. I have tried Hercules drivers, Ati, and Omega. With my geforce 2 ultra i could play most games on low or med settings very good. Not nba since it only has 32bit res. Any suggestions would be greatly appreciated! I would also like to hear from everyone that has the Hercules 9800 pro to see how the card performs for you.

Thanks!

is it getting enough power?

(btw, the only person that really profits from being loyal to a brand is the company owner :P , shop around, especially if your gonna dish out that much cash (im not saying hercules is a bad brand btw, i dont know jack shit bout GFX card brands))

A PIII 600 MHz with Windows XP and low performance?

Time to upgrade the system if you're looking for high performance.