Could someone tell me whether running the minimum system requirements will result in decent gameplay or will it be really choopy. I got an old pc lying around that I could pop a geforce 2 in for 20 bucks (since thats the only requirement it doesnt meet), but will it actually be fun to play or annoyingly choppy?

mine is 50 mhz over cpu limit and it is not so choppy if you turn down some stuff in the config...