No, without TurboCache is better, Turbocache is crap, it uses your system RAM jsut like Integrated Graphics. It sucks, it is just for people who need a really cheap card, and by REALLY CHEAP , I MEAN LIKE THIS MUCH MONEY.... $ ........ I would spend $$$ on a GPU if I were you Compgen. At least $125 if you have it. Turbocache is ok if you have VERY GOOD RAM, but it still sucks.
Or just get a 6600GT and be done with it.. The 6600GT is CHEAPER then the 9800XT, a bit more then the 9600XT, but outperforms both without breaking (a digital) sweat.