er, wut? nothing beyond 1080p?
then how come DP1.2 supports 2560x1440 and 4K via SST, not MST as you are trying to claim, wow bizaro world, lets just make stuff up to try and look clever and claim AMD invented everything
the first few 4K monitors used MST because there were no SCALERS that supported greater than 2560x1600, so they had to cobble two SCALERS together to get 4K working, not 2 cables... the newer 4K monitors use a SINGLE SCALER so they use a SINGLE CABLE and SINGLE TILE... they are DP1.2 NOT DP1.3
It would so so so help if you could read. See the comma after the word standard? Is it meaningless, no it's god damned not.
What was the major problem with 4k gaming up till pretty much the beginning of this year. HDMI was stuck at 30hz, half the industry is based around tv's/bluray players and the like so half of everything 4k had to account for HDMI. Until this year there was no standard cable
s for all devices to simply hit 60hz on a single cable.
The lack of HDMI 2.0(even being announced/finished) meant almost every 4k panel was designed to be used as two tiles or a single 30hz tile. IE everything either came with a single hdmi port and was stuck at 30hz(in which almost every gaming review would say... it sucks balls, wait for 60hz), or two hdmi ports OR a display port(or in exceptional circumstances... both) meaning the industry made chips that in either case would take two tiles and make one image. This created problems all around.
There was a proper standard all around for 1080p, it was thought up ahead of time, everyone got ready and everyone did what was required.
With 4k... nope. They didn't get together and say, hey HDMI make a 60hz 4k cable for 2 years from now, hey panel makers you make 4k screens for 2 years from now, hey scalar chip makers you make 4k 60hz capable scalars for hdmi/dp for 2 years from now, hey DP... oh, I see you're ready for 4k... as you were then.
Screen makers made screens, HDMI which dominates half the industry did nothing, scalar makers had to cater to HDMI, screen makers had to cater to HDMI/what the scalar chips were doing... DP was there but wasn't being used effectively. A standard that everyone adheres to is required, one cable being good enough but one not isn't good enough. Everyone could make 120hz screens with tile supported dp cables, but they won't because there is a standard coming out to support 120hz and it will be easier to stick to that.
DO you think it's some surprise that this year prices dropped, production increased, more companies are making more models and HDMI 2.0 with 60hz 4k minimum standard being reached is a complete and utter coincidence? Yes things got better before screens even had it, but when the goal posts moved(ie screen/scalar makers knew it was coming) they prepared for it.
This works for software as well, if everyone had a specific "we'll be doing 4k in two years together" message and tell dev's to support 4k UI's from today because it makes sense, you might have all games from then on be fine with 4k. When the message is... we might be doing 4k, at some point, but we're not going to really announce properly how or when we'll do it.. well software devs being paid by companies who care about bottom lines will often not support things they aren't pretty much required to. So many games in 4k are crap with unreadable text or awful tiny UI's.
Everyone being on the same page, working to the same goal and being ready means better things for everyone.
Unfortunately HDMI is here to stay on the tv/console/cable box side of things thus monitor makers will cater to the standards of the lowest common denominator, it's genuinely ridiculous how HDMI taking an age to make something useful for 4k held back everything so much but that is how the industry works in many areas. Standards are the ONLY reason things move on significantly, everyone doing their own thing would have so much competing rubbish that is incompatible that no progress would ever get made.
There are alternatives, if Nvidia or AMD could design and build their own screens and cables then they could pretty much do what they wanted, in an industry where hundreds/thousands of companies work together on devices that need each other, standards are crucial...