so 4k @ 60hz means you need to push 497,664,000 pixles per second. 2k @ 144hz means you need to push 530,841,600 pixles per second. Mind you that these numbers are to achieve 60 fps at 4k constantly or 144 fps constantly at 2k.4K @ 60hz. vs. 2K @ 144hz. Is there a big difference in IQ?