guys im gonna buy a Sapphire Radeon HD 6670 1GB DDR5 Graphics Card but i dont noe whether it will work i dont how W i hav here is a pic of my PSU: http://s1322.beta.photobucket.com/user/MOHAWK-117/media/PSUDETAILS_zpsb79313e7.jpg.html?sort=3&o=0 how much W do i hav ????