BTW that card that i gave u the link for is actually better than i thought. It beats the x1800xt and then the next one up from that is the x1900xt but that is much more expensive.
Its up to you if you want to spend the extra money or not. The x850xt is very good. The engine clock is 520mhz and the mem clock at 1.08ghz so thats pretty dam good.