Detailed graphics card specifications and reviews are great - that is, if you have the time to do the research. But at the end of the day, what a gamer needs is the best graphics card within a certain budget.
http://www.tomshardware.com/2007/11/05/best_graphics_card/index.html
http://www.tomshardware.com/2007/11/05/best_graphics_card/index.html