guys is it worth to make an replacement the gtx560ti with asus r7-260x and pay 36 $ ive found a guy who got it as an gift and he wana to switch it with me
Those both gpu are hardly different than each other. If you are paying money just to replace with 560ti then that's not a good Idea.
Keep your current gpu.
it does have newer technology. however if you play at 1080 som games the 560ti still gets better performance than a 260x. i would keep the 560ti and save up for a real upgrade. http://www.techpowerup.com/reviews/AMD/R7_260X/7.html