I hate gpu vendor moneyhats as much as console moneyhats.
And considering performance in AC3 with a 7870 I doubt that I'd play in 4K anytime soon. My 23" 1080 monitor looks really sharp, too. Higher DPI is better, of course, my brother has a laptop with a glossy 1080p @ 17" screen that is just beautiful to look at with properly AAed games, but mine is still good enough, more than good when I sit back onstead of hunched close. And I couldn't place a much bigger screen on my desk, anyway.
So at least moneyhat smoother min fps and micro stutter/frame latency and juicy max percormance and AA that doesn't shave off a metric ton of performance over super super hig-res textures. Better overall performance>enormous res, IMO.