The GeForce GTX 1070 Ti is engineered with top-notch chokes and capacitors. It is designed for overclocking with 6+2 power phases which provides more stable voltage output and makes the MOSFET working at a lower temperature.
Before going to the answer to your question let me tell a little about the key features of this card.
1. Cooling System
The GeForce GTX 1070 Ti is integrated with the WINDFORCE 3X cooling system. The cooling system is engineered to provide higher performance at a lower temperature.
A pair of copper composite heat-pipes, special fin architecture, and a unique blade fan design are combined for an effective heat dissipation capacity.
Combining both thermal conductivity and phase transition the copper composite heat-pipes efficiently manage the heat transfer between two solid interfaces. The pipes are designed to maximize the direct contact area to the GPU.
The GPUs come with a total of 3 fans, each sizes 80mm. The semi-passive feature of the fan keeps it off if the GPU is under a set loading or temperature for low-power gaming. You can know the status of the fan from the LED indicator located on the top of the card.
The edges of the fan are triangle-shaped so that it can split the airflow and can guide it smoothly through the 3D stripe curve on the fan surface. Such design enhanced the airflow by 23% over the conventional cooling fans.
2. Intuitive Utility
The intuitive utility offered by Gigabyte for Ti is Aorus Engine. You can meet all your gaming requirements like adjusting clock speeds, voltage, fan performance, RGB lighting effect, power target through these interfaces.
3. RGB Fusion
The 1070 Ti comes with 16.7M color options. Now choosing the right color scheme is under your control.
4. Back Plate
To increase the durability of the card metal plate is used in the back. It also made the cards look sleek and attractive.
Now let me come to the reply to your question.
The 1070 Ti will work fine for 1440p gaming depending on your CPU. Yes, it won’t give you 144 FPS or more in every game but you know that is what the G-sync monitor is for. If you would get 144 FPS in every game would you use Gsync?
If you play Overwatch, Doom, CS GO, Diablo 3, and Path of Exile you will get 120+ FPS and for Witcher 3, Rise of the Tomb Raider, and PUBG you will get below 100 FPS with a 1070 Ti without any problem.