ok i really dont know much at all about video cards and i have an integrated intel gam x4500 at the moment and i wanted to get a better one then that, i have an hp slimline pavilion and i do know i have a pci-e x1 x16 32 bit slot also its a dual processor with 4 gb of ram and 3.2 ghz, and other things are core voltage is 2.220 V, my d ram frequenncy is 400 mhz and if you need to know more just tell me. what are some of the best video cards i can get with this setup