Originally Posted by irkuck
Scenario is the reason why the 4K TV display is white elephant, especially those 46" and 55" minielephants
Here is a link to a 2004 BBC survey
in which the median viewing distance was 2.7 meters and that 10% of people had a viewing distance of 2 meters or closer. Though it was a small survey (102 people) and was done years before HD broadcasts started in the UK the information on this survey was publicly released. Personally I think there will be a large enough market to support 4K TVs in the 60" to 70" size range. When you add in features like "autostereoscopic 3D" or "passive 3D" though 4K TVs can make sense in smaller sizes as well. For example when the autostereoscopic 3D mode is used on the Toshiba 55" 4K TV the resolution drops to 720p
Originally Posted by walford
The Sony definition of 4K TV is quoted below:
Digital cinema resolution is measured in units of “K,” which stands for 1024
horizontal pixels. In the early years of the DCI Specification, the dominant
resolution was 2048 pixels horizontal x 1080 vertical, known as 2K. But 2K represents only 7% more pixels than 1920 x 1080 HDTV. Fortunately, a more future-oriented, higher-resolution option was also written into the DCI Specification: 4K. At 4096 pixels horizontal x 2160 vertical, this is exactly four times as many pixels as 2K,
and greater than four times the pixel count of HDTV
That was from a paper on the Sony VPL-VW1000ES
in the "Digital cinema standards" section. Personally I think that in the long term 4K TVs will use a resolution of 3840x2160 since that makes a lot more sense in the consumer world. For professional applications there will be a market for 4096x2160 displays but in the consumer world that resolution is a huge negative (16:9 content would either have to be stretched or it would have black bars on the side of the screen with 16:9 content). I think there were likely other reasons why Sony went with that resolution on the Sony VPL-VW1000ES and that it is not an indication of future plans for consumer 4K displays. Also note that the Sony VPL-VW1000ES can be set up to work only at 3840x2160.
Originally Posted by irkuck
This is likely to be theoretical, if not impossible at all. According to the info from the Intel Developer Forum
in Beijing (April 11th 2012) Ivy Bridge chips support up to 3 simultaneous displays but maximum res is 2560x1600. The total output of pixels is thus very high and enough for the 4K but at least in the current configuration the output for single display is limited to 2.3K.
The information on Ivy Bridge supporting 4K by 4K resolutions was from a presentation given at IDF 2011 in San Francisco and can be seen in this article
. It is possible that support for 2160p60 output over DisplayPort is an optional feature with Ivy Bridge but even if it isn't than it is still possible to use two DisplayPort connectors for 2160p60 output (for example the Eizo 4K computer monitor works by using either two DisplayPort connectors or two dual-link DVI connectors). That is a bit of a poor solution but technically it would allow for 4K displays using only Ivy Bridge integrated graphics.
What I find much more interesting is that Intel expects 4K computer monitors for desktops to arrive for the premium market next year and for the mainstream market in 2015 as seen in this article
. Note that this news came from IDF 2012 in Beijing and has been widely reported as seen in this German article
(which also has several pictures showing a 4K computer monitor working at 60 fps with 30-bit color using a single DisplayPort connector and a few slides in English that explain how it was done).
NVIDIA doesn't make it easy to tell what Kepler supports in terms of output resolution and I posted a bit about that issue in this post
. Based on everything I have read I believe Kepler is capable of 2160p30 output over both DisplayPort and HDMI but I can't tell for sure whether it is capable of 2160p60 output over DisplayPort. AMD was much clearer on this issue and specifically stated on their product pages the fact that their new Southern Islands based graphic cards supported DisplayPort 1.2 HBR2 (High Bit Rate 2 which means that it supports double the maximum bit rate compared to the original version of DisplayPort).