Upgrading HD6850 with R7 260X

Dags

Honorable
Aug 5, 2013
141
0
10,710
Hello,
I am thinking upgrading my gpu (considering buying a new ttile soon|) with a more modern one. I use a 2560x1440 resolution monitor but I don't really need max details or anything. I just want my games to look nice and shiny.
So. am I going to see considerable increment in performance? My CPU is a Phenom II x4 955 BE.