powerful graphics cards

[noothers]

Okay I need some help can some rank these cards in order from least to most powerful. I'm just curious so I can use it as a reference
Amd r9 290x
Gtx 780 ti
Gtx 980
Nividia Titan
Nvidia Titan black

 

[Gam3r01]

http://tpucdn.com/reviews/ASUS/GTX_970_STRIX_OC/images/perfrel_1920.gif

Performance will vary depending on resolution. So for example, the 290x is better than the TITAN at higher resolutions, but not as much at 1080p