They're both tailored for gaming, so multi-monitor set-up is seamless, you can save up to three user-defined profiles, and support for AMD FreeSync means you can game with the no-sync fast refresh option on your existing hardware. Plus you'll get edge-to-edge gameplay, crammed with 3.68 million pixels (on the 27inch), which is almost two times more than Full HD. Both go on sale on August 28, starting at $320 for the 24inch and $550 for the larger model.