What? he can max out much games out there @1080p...others with less AA, and a bit oc it will do.
In my opinion it is worthy of the upgrade, i can't stand those low resolutions, and at 1080p you'll notice the difference.
Like i said go with a ips monitor 1080p those from asus are like 5ms and they're cheap (the link i gave was at 122$ a 23" screen)