I am trying to play PSO2 on maximum graphic settings with my HP Pavilion

hi, as they said the min system that runs it requires geforce 7800gt or better . as toms says for this price ( 120$) best graphic is AMD Radeon HD 7770 .here is the link :
http://www.tomshardware.com/reviews/gaming-graphics-car...

and at the end of the article you can find out Graphics Card Hierarchy Chart which you comapre new and old graphics together.
i made a pic from that chart ( the below image ) .the min graphic is in black rectangle and the suggested is in red rectangle as you see HD 7770 is much more powerful and has much more muscle to run the game smoothly .

Thanks! I'll check it out.