More 4K rambling!
I hope that with the new 4K Thunderbolt Display Apple doesn't leave us early rMBP adopters in the dark. If I remember correctly, the old Apple 30" Cinema Display had the capability of using two DVI ports to run it. Considering my 2012 rMBP has a fast graphics card and two Thunderbolt ports (seriously, when would I ever use two?), perhaps it would be possible to make an adapter to run 4K off of the two ports? $50 splitter adapter and I'm sold. Anyone knowledgable care to chime in on whether or not that would be possible?
My nearly 6 year old DS-263N champ is going out and the colors are shifted beyond calibration. I can't even get it to connect to DVI in Mavericks (it annoyingly auto-connects input and I think the timeout window is shorter in 10.9?), and getting it to connect to my 360 takes multiple attempts and it sometimes flickers. Between just purchasing a higher-end rMini and Xbox One, I really don't want to have to buy both a new Mac and a Thunderbolt Display anytime soon just to get a good new external monitor. And since this will likely last me another 56 years, I don't want to be stuck with a lower pixel-density display until practically 2020.
I'm glad to hear you opine for an pre-ThunderBolt 2 solution as well (see my above post), and I was unaware that the Apple 30" Cinema Display may have supported the use of a couple of (presumably single-link?) DVI ports, though a quick search couldn't find any additional information on this. Is this in fact the case and where can I find out more?
A few more points about 4K video on the Mac:
I've encountered a couple or a few times on-line calculations in forums where the poster claims that ThunderBolt 1 should have sufficient bandwidth to drive a 4K display, but there's a big difference between "should" and "can". If you plug it in and it doesn't work and third party solutions like SwitchRes X are no help, the theoretical possibility of it working is irrelevant. "Try not. Do... or do not. There is no try." And given that some MacBook Pros apparently have DisplayPort 1.2 enabled ThunderBolt chips, we may depressingly be left with it being technically possible for Apple to enable 4K over ThunderBolt 1, but not going to the effort to do so.
Another obscure capability of 4K displays is the first ability run full HD in portrait mode. This means FCP users could have three Full HD videos stacked up on top of each other with some room to spare, which, while I confess total ignorance of high end video editing, sounds like it might be promising for comparing three stages of editing.
The PPI of 4K displays has been a concern of mine, but I've found 2048 x 1536 on a 17" CRT capable of that res. to be tight but usable, and some use of very high PPI displays (Retina Mac Books) in non-Retina mode has alleviated those concerns. Pump up the fonts sizes and enlarge the icons and it works without too many problems. The experience of using 3840x2160 on your current display size can be simulated by finding desktop images of that resolution on-line and viewing them full screen (either with Quick Look or Preview). It's not a perfect simulation, but see what you think.
A lot of posters here are claiming that only high-end users can benefit from 4K and that for casual photo viewing and some rare high res. video its is only a minor upgrade. Possibly, but check out vgmaps.com's ginormous images which demand pixel-perfect viewing to look right before you write off higher res. Another major benefit for me would be higher res. in PDF's, which often benefit more from high resolution than most photos.
One final note. Could I make the vain and futile attempt to get people to stop insisting that "Retina" (which has always been a gimmicky marketing term) absolutely must mean quadruple the current resolution? Apple has thus far done that, but the company is consistent right up until they are not. Holding out for 5120x2880 res. in Apple's next ThunderBolt display and highest-end iMac is insane and with the touting of the 4K capability of the upcoming Mac Pro, its pretty clear that 4k is the next jump in resolution. When we can expect the hardware from Apple is anyone's guess, but I know 5120x2880 is a step too far too soon.
Ranting desire satiated, for the time being.
