Here is the problem with increasing resolution or refresh rates:
1920x1080 = 2,073,600 pixels per frame.
2560x1080 = 2,764,800 pixels per frame.
2560x1440 = 3,686,400 pixels per frame.
3840x2160 = 8,294,400 pixels per frame.
Now, with a 60 Hz monitor, your video card has to refresh the frame 60 times a second to achieve "perfection".
120 hz monitors need 120 refreshes per second.
144 hz monitors need 144 refreshes per second.
Now, if you look around these forums, you are going to see that many, many people are having enough trouble getting to 60 FPS at 60 Hz.
When you jump to 120 Hz, you need exactly double what 60 Hz needs. And obviously, 144 Hz needs even more. Each step up needs stronger hardware. But that hardware to generate 3840x1080@144 Hz pretty much does not exist yet. I would go so far as to day that even 60Hz at 4k resolution is going to be a challenge right now. Its going to be years before we can double the pixel count output, and we need to quadruple it for 4k @ 120Hz.
1920x1080x60FPS = 124,416,000 pixels per second.
3840x2160x60FPS = 497,664.000 pixels per second.
3840x2160x120FPS = 995,328,000 pixels per second.
3840x2160x144FPS = 1,194,393,600 pixels per second.
Yes, 4K res @ 144 Hz would need 2.4 BILLION pixels every 2 seconds. We just ain't there yet Charlie.
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