for example with the rx 460:
http://www.gigabyte.com/Graphics-Card/GV-RX460WF2OC-4GD#kf
https://www.asus.com/es/Graphics-Cards/ROG-STRIX-RX460-O4G-GAMING/
I´m considering more things like durability, quality materials, stability, etc more than just witch one OC higher or get 2 fps more.