New
#41
GTX 780TI > GTX 780
GTX 980TI > GTX 980
GTX 980TI > GTX Titan
GTX Titan Black > GTX Titan
GTX Titan Z > GTX Titan Black
And now for 2016, the new king! GTX 1080 > GTX Titan Z, GTX Titan, GTX Titan Black, and GTX 980TI.
If you already had GTX 980TI, than there's no need to upgrade, because the GTX 980TI price = GTX 1080 price.