The EUROPEAN labeling of this TV is : EU XD80xx (the xx value changes depending on tv color, remote type etc., non-important things)
Rtings posted a review of it, and it rates highest in a lot of the areas most pertaining to gaming.
It's rated highly specifically for gaming, it also does pretty well as a dedicated PC monitor.
Full review here
Great for gamers. Very responsive TV, has low input lag (w/HDR turned on) and is great at handling fast motion. Picture quality is good.
43 inch - 650$ / 49 inch - 800$ (at amazon)
The review and TV specifications both indicate it is 10 bit color depth, and supports HDR10. Check the input specifications section of the review.
Update 09/08/2016: Our original test was showing an incorrect color depth of 8 bit due to some incorrect drivers on our system, but after some correction to our test apparatus, we tested again the color depth and we can confirm that the Sony X800D do in fact have an 10 bit panel. Also supports 444 chroma.
5.1 Passthrough ARC Dolby Digital
5.1 Passthrough ARC DTS
5.1 Passthrough Optical Dolby Digital
5.1 Passthrough Optical DTS
HDMI 2.0 Full Bandwith : Yes
4k@60hz: HDMI ports 2 and 3 only.
ARC : Yes (HDMI 3)
USB 3 : Yes (1)
HDCP 2.2 : Yes
CEC : Yes
MHL : No
Variable Analog Audio Out : Yes
BASIC SET UP INFORMATION *************PLEASE READ**************
1) Connect your Pro or other 4k/HDR gaming devices into either HDMI ports 2 or 3. HDMI port 1 and 4 will not allow 4k/60hz w/HDR at full 4k.
2) Turn on Enhanced HDMI. Click the home button on your Sony's remote, scroll all the way down to settings. Go to input. Change HDMI to ENHANCED. This turns on 444 and HDR at full 4k.
3) Go to your PS4's settings -> Sound and Screen -> Make sure everything is on automatic. And then go to video output information and make sure it says : 2160p - 60hz. RGB HDR: 2k/4k. If it says something other than that, something is wrong.
4) You can leave many of the PS4's and TV's settings on auto. The TV and Pro do a good job of communicating with each other for the optimal picture depending on the software being used.
5) When playing HDR enabled content, the TV should automatically increase brightness (which is what it calls it's backlight setting) to MAX. If not, do it manually. Of course, when you exit out of HDR enabled content, the brightness should go back to your standard defaulted non HDR settings..)
6) Set the TV to GAME MODE pitcture setting to reduce input lag.