Shektron
Honorable
Dunno who this other guy is, but he sure seems arrogant.
Anyway, agree with constantine, for 1440p 144 Hz, 1080 Ti or bust. 1440p 144 Hz is extremely taxing on both CPU and GPU, so you need the best of the best of both components for running that. A 1080 Ti would definitely be recommended, but you'll need a CPU upgrade as well for that. A top of the line i7 'K' chip is best suited for 1440p 144 Hz.
Unless you plan on upgrading the CPU as well, stick to 60 Hz, whether you want 1440p or 1080p is up to you. If you want the GTX 1080 to last long, 1080p 60 Hz, but if you want better visuals and don't mind upgrading a bit sooner than you'd have to at 1080p, 1440p 60 Hz will also run with a GTX 1080 perfectly. But 1440p 144 Hz, you'd need a CPU upgrade along with the GTX 1080 Ti, nothing less.
Anyway, agree with constantine, for 1440p 144 Hz, 1080 Ti or bust. 1440p 144 Hz is extremely taxing on both CPU and GPU, so you need the best of the best of both components for running that. A 1080 Ti would definitely be recommended, but you'll need a CPU upgrade as well for that. A top of the line i7 'K' chip is best suited for 1440p 144 Hz.
Unless you plan on upgrading the CPU as well, stick to 60 Hz, whether you want 1440p or 1080p is up to you. If you want the GTX 1080 to last long, 1080p 60 Hz, but if you want better visuals and don't mind upgrading a bit sooner than you'd have to at 1080p, 1440p 60 Hz will also run with a GTX 1080 perfectly. But 1440p 144 Hz, you'd need a CPU upgrade along with the GTX 1080 Ti, nothing less.