Often you won't see higher than 100 fps at 1440p using the GTX 980 Ti (depending on the settings), perhaps 120 is possible with balanced settings.
These monitors cost a fortune. Perhaps 1080p@144Hz is your deal? The experience of it is also very good.
Monitor:Nixeus NX-VUE24A 144Hz 24.0" Monitor ($309.99 @ Amazon) Total: $309.99 Prices include shipping, taxes, and discounts when available Generated by PCPartPicker 2016-01-09 21:41 EST-0500
Otherwise, this 1440p@60hz monitor that will also look really good
Monitor:Asus PB278Q 60Hz 27.0" Monitor ($408.00 @ Amazon) Total: $408.00 Prices include shipping, taxes, and discounts when available Generated by PCPartPicker 2016-01-09 21:42 EST-0500
Or, 1440p@144Hz (No IPS)
Monitor:BenQ XL2730Z 144Hz 27.0" Monitor ($519.00 @ Amazon) Total: $519.00 Prices include shipping, taxes, and discounts when available Generated by PCPartPicker 2016-01-09 21:45 EST-0500
There are also 1440p@144Hz IPS monitors past 650 dollars.