I currently have an Athlon 64 x2 5600+ processor and is planning to upgrade this december to at least an Intel pentium G3258, im still playing games that was released on 2009-11 and no plans yet to playing newer games, should i upgrade my CPU now since some of the games im playing like Assasin's Creed is being bottlenecked by my CPU but some other games play still good like Borderlands, or should i hold off for another year since im still playing old games, BTW my GPU is an old Radeon HD 5670 thank you,