You dont need to have good graphics to enjoy a game. For example: My 6800GT has died and Im currently running a 32mb Radeon VE, for those that havent heard of it before, its basically a crippled Radeon 7000 with 1 pixel pipeline. I was playing thru Freelance before at 800*600 with everything on low and no aa/af. Looked nasty but once i started playing I was really enjoying myself. Same goes when I was playing TIMCOOP with cougho last night.
Good graphics is nice. But if you have a solid game, with good graphics is better