The console doesn't "support upscaling" it performs it's OWN upscaling. This will be beneficial, mainly for people with cheaper 4k TV's that have crap upscalers in them.

My question is basically to decide the gains I would have from a Slim having this upscaler (versus the TV... Neo I'll probably buy because of gain in VR and the extra power hopefully giving me even better look). Input lag wasn't a problem for me, but good to know If Slim offers just 4K playback (tv already have those available natively), 4k drive (no Bluray sold in the country anyway) and the upscaler isn't a gain I won't need the Slim before Neo comes out.

Thanks Man

See perma answer to me... the upscaler may be a good thing for you or not depending of your set

No, most Xbone games are not 720p. Most are 1080p just like PS4. You only hear about the ones that aren't 1080p.

I hope the scaler is good as that's the only way to get HDR output. HDR is restricted to 4K signals with HDMI 2.0  So even if the tv has a better upscaler, you'll miss out on HDR effects that that mid to high range 4K tv supports. It's only 3 games for now that are confirmed to get HDR output so you can always switch back for other games.

Announcing HDR support implied 4K upscaling. More interesting is what kind of HDR output it will support, HDR 10 or Dolby vision or is there some version for 10 bit RGB as well. Will it do the 1000 nit highlights, use the full DCI-P3 color spectrum or simply 10 bit RGB. DF analysis will be interesting for a change. Advise on what the best 4K tv for HDR gaming is will be appreciated.

The XBR65x855C is an international version of the 850C, which isn't as ideal for gaming as the 810C (which has a faster input lag).

If you're looking for a fast 4K with HDR, though, you're gonna have a bad time. The only ones that really stand out anymore are OLEDs, and burn-in aside... Those LG TVs... Man, if they would spend $50 per TV on a higher end processor, it could handle a better noise algorithm and not get covered in artifacts anytime something moves.

Indeed. There is going to be fragmentation until HDR or Dolby Vision wins the market, Microsoft has thrown it's support behind HDR, so it should be interesting if it ends up being the next HD DVD from a support perspecive or if it becomes the standard.
But you also don't need HDR to upscale your games.

As for TV's, I would personally be trending towards an LG OLEDD55C6V HDR Or perhaps the Panasonic TX-65DX902B. OLED impressed me in person. I only have an old mid range LG 60LF6300 which I would like to upgrade to 4k+larger size+HDR+OLED.

As a TV salesman who witnesses both of these types of TVs in action all day:

1. I would never recommend an LG TV for gaming, or at very least not one of their smart TVs. It'll ruin anything that moves by covering it with artifacts (this is something that extends to OLEDs and I would be glad to point it out). The insane input lag is great, but your eyes aren't going to be able to catch anything under 13ms, anyway. Burn in risk and bad noise algorithms are too big of a price to pay for this (not to mention sacrificing nearly all of your grayscale).

2. Panasonic's TVs this year are just absolute trash. They just don't really hold a candle to Bravias or Samsungs. I was super excited to set them up, and even more disppointed when it looked like hot garbage, even after adjusting the setting to the best of my ability for 30 minutes.

I have an LG Smart TV. Turning off allot of the processing pretty much eliminates the lag, besides peoples perceptions of input lag will differ from person to person, we may be more "aware" of it whilst the next person might never be able to tell the difference.

And I will never own a Samsung TV. I have repaired a few of them in my time, some components are of questionable quality, especially in some of the cheaper and mid-range models where corners have clearly been cut with things like capacitors.

Burn-in is a non issue if you know what you are doing, same held true for Plasma's, heck even CRT.

As for calibration, nothing beats using the proper tools. :)

I already bought the TV Azuren... and in country it was the best TV available in it's range (TVs from 6000-9000 where sensibly worst than the 850C, there were only 2 TVs that were better The 9XX Bravia Series and One series 9 or 10 Samsung that would cost around 15-17k... so I ended up with the 10k Sony and I really like it).

Input lag haven't been an issue for me at the moment, at least I haven't felt the lag and the colour crispness is very good for me.