AMD is more for video editing? weird ... very weird ... 99% of the people who know alot about this will say that intel is more for video editing
AMD is enough dude trust me go look on youtube and look for some benchmark videos of amd + GPU and intel + gpu ( same gpu as amd + gpu ) youll see they give the same performance
you should only buy intel if you have a high budget which in your case isnt so therefor AMD is enough for your needs
Get a GTX 560 TI or an AMD 6870 or 6950 ( or higher ) they are still enough for most of the games these days
i have a GTX 560 TI and i havent played a game which i COULDNT play on ultra
look at my benchmark videos on my channel ive uploaded some vids of some games including BF3 and witcher 2
trust me dude get the GTX 560 TI + amd quad core ( 100€ ) and youll be able to play everything on max
even after 2 years youll probably still be able to play everything on medium
ninosM1 - YouTube