Rounding all this up in one place for new TV & GPU buyers. It's amazing how confused people are across the web at the moment concerning refresh rates and GPU compatibility: HDMI 2.1 is the future new connection standard for 4K TV's that allows Variable Refresh Rate (VRR) - TV's with full HDMI 2.1 are expected to release anywhere between now and 2020! HDMI 2.0 TV's that are already out now can actually add VRR support to their sets with a software update. (Samsung are doing this for some sets already) HDMI cables - [EDIT] Your common 'High Speed' HDMI cable should allow 4k @ 60hz, but any higher you actually need to buy a new higher bandwidth cable (max 120hz) called 'Ultra High Speed' or '48G Cable'. [DOUBLE EDIT] I can get 4k @ 60hz on a ~1 meter long cable, but not on a 3 meter long cable. All sorts of GPU and Display errors happen on the longer length cable. FreeSync is just AMD's name for VRR essentially as it's the same refresh rate standard underneath. AMD's latest GPU's and CPUs will give you VRR gameplay on an HDMI 2.1/2.0 VRR enabled 4K TV. VRR as a TV standard is also going to be supported by AMD GPUs alongside its own FreeSync (the set may say its VRR, not specifically FreeSync, but it should still work) G-SYNC is nVidia capitalising on their dominant market position to lock their customers into their own proprietary hardware ecosystem. G-SYNC is a competitor to VRR and is unlikely to appear in 4k TVs. GeForce GPUs currently don't support HDMI 2.0/2.1 VRR - but that could change in the future... 4K VRR - Well, HDMI 2.0 VRR will get you a 4K resolution at 48-60hz VRR. Pretty slim window really, would like to see a demo of that. It will do 1080p between 20-120hz however, if the TV is a 120hz native panel. DisplayPort. 4k TVs dont have 'em! Hope that helps clarify what you need to game on a 4k TV without screen tearing, regardless how good the next gen of GPU's perform. Could be a big swing factor for AMD?