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The news is this: First computer monitor capable of 60Hz 4K arrives. Previous 4K monitors have been 24Hz. That opens up a number of important markets including

by cjensen 13y ago

The news is this: First computer monitor capable of 60Hz 4K arrives. Previous 4K monitors have been 24Hz. That opens up a number of important markets including 4K playback of video and 4K gaming. Sure this isn't a retina display. That would be a different market.

lead99 13y ago
First? https://www.asus.com/Monitors_Projectors/PQ321Q/ https://www.asus.com/Monitors_Projectors/PQ321Q/
ChuckMcM 13y ago
You haven't seen the ASUS monitor? [https://www.asus.com/Monitors_Projectors/PQ321Q/#specifications https://www.asus.com/Monitors_Projectors/PQ321Q/#specificati...] ? Its available now ($3,500 list (http://www.amazon.com/ASUS-PQ321Q-31-5-Inch-4K-Monitor/dp/B00DJ4BIKA) http://www.amazon.com/ASUS-PQ321Q-31-5-Inch-4K-Monitor/dp/B0...) and with 8mS pixels it can (in theory) do 120Hz displays. I don't know if there are 4K video cards doing 120Hz displays but the monitor should be able to display it if they could.
- cjensen 13y ago
  The ASUS does not do 120Hz. It does not even do 60Hz unless you use two DisplayPort cables and drive the left half of the screen as Monitor 1 and the right half as Monitor 2.
  - ChuckMcM 13y ago
    Hmm, actually TomsHardware had it running at 60hz with two HDMI cables, but the article points out the challenge is the display card. The spec on the ASUS glass is 8 mS pixels, you can only change a by refreshing the screen, if you are changing them every 8 mS you are refreshing the screen every 8 mS which is half of 16 mS or 120Hz. Typical 60Hz displays have 12mS pixel change times. Now I'll certainly concede that running 30bits of color per pixel to a 3840 x 2160 screen at 120hz will require 3.7GBs of bandwidth but each display port can provide 2.16GBs [2] for a total of 4.32GBs across both panels. It will be interesting once the "4K generation" of graphics card hits the street to see what this monitor can do. [1] "Asus’ $3500 PQ321Q is one of the only 4K screens capable of 60 Hz. But in order to achieve that refresh rate, you’re forced to run either one DisplayPort or two HDMI cables between your PC and the monitor." -- http://www.tomshardware.com/reviews/pq321q-4k-gaming,3620.html http://www.tomshardware.com/reviews/pq321q-4k-gaming,3620.ht... [2] "The DisplayPort connector can have 1, 2, or 4 differential data pairs (lanes) in a Main Link, each with a raw bit rate of 1.62, 2.7, or 5.4 Gbit/s per lane with self-clock running at 162, 270, or 540 MHz. Data is 8b/10b encoded where each 8 bits of information is encoded with a 10 bit symbol. So the effective data rates after decoding are 1.296, 2.16, and 4.32 Gbit/s per lane (or 80% of the total)." -- http://en.wikipedia.org/wiki/DisplayPort http://en.wikipedia.org/wiki/DisplayPort

by cjensen 13y ago

lead99 13y ago

First? https://www.asus.com/Monitors_Projectors/PQ321Q/ https://www.asus.com/Monitors_Projectors/PQ321Q/

ChuckMcM 13y ago

You haven't seen the ASUS monitor? [https://www.asus.com/Monitors_Projectors/PQ321Q/#specifications https://www.asus.com/Monitors_Projectors/PQ321Q/#specificati...] ? Its available now ($3,500 list (http://www.amazon.com/ASUS-PQ321Q-31-5-Inch-4K-Monitor/dp/B00DJ4BIKA) http://www.amazon.com/ASUS-PQ321Q-31-5-Inch-4K-Monitor/dp/B0...) and with 8mS pixels it can (in theory) do 120Hz displays. I don't know if there are 4K video cards doing 120Hz displays but the monitor should be able to display it if they could.

cjensen 13y ago
The ASUS does not do 120Hz. It does not even do 60Hz unless you use two DisplayPort cables and drive the left half of the screen as Monitor 1 and the right half as Monitor 2.
- ChuckMcM 13y ago
  Hmm, actually TomsHardware had it running at 60hz with two HDMI cables, but the article points out the challenge is the display card. The spec on the ASUS glass is 8 mS pixels, you can only change a by refreshing the screen, if you are changing them every 8 mS you are refreshing the screen every 8 mS which is half of 16 mS or 120Hz. Typical 60Hz displays have 12mS pixel change times. Now I'll certainly concede that running 30bits of color per pixel to a 3840 x 2160 screen at 120hz will require 3.7GBs of bandwidth but each display port can provide 2.16GBs [2] for a total of 4.32GBs across both panels. It will be interesting once the "4K generation" of graphics card hits the street to see what this monitor can do. [1] "Asus’ $3500 PQ321Q is one of the only 4K screens capable of 60 Hz. But in order to achieve that refresh rate, you’re forced to run either one DisplayPort or two HDMI cables between your PC and the monitor." -- http://www.tomshardware.com/reviews/pq321q-4k-gaming,3620.html http://www.tomshardware.com/reviews/pq321q-4k-gaming,3620.ht... [2] "The DisplayPort connector can have 1, 2, or 4 differential data pairs (lanes) in a Main Link, each with a raw bit rate of 1.62, 2.7, or 5.4 Gbit/s per lane with self-clock running at 162, 270, or 540 MHz. Data is 8b/10b encoded where each 8 bits of information is encoded with a 10 bit symbol. So the effective data rates after decoding are 1.296, 2.16, and 4.32 Gbit/s per lane (or 80% of the total)." -- http://en.wikipedia.org/wiki/DisplayPort http://en.wikipedia.org/wiki/DisplayPort