So the effective data rates after decoding are 1.296, 2.16, and 4.32 Gbit/s per lane (or 80% of the total).". Data is 8b/10b encoded where each 8 bits of information is encoded with a 10 bit symbol. "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.
Dell u3014 review Pc#
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.". "Asus’ $3500 PQ321Q is one of the only 4K screens capable of 60 Hz. It will be interesting once the "4K generation" of graphics card hits the street to see what this monitor can do.
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 for a total of 4.32GBs across both panels. Typical 60Hz displays have 12mS pixel change times. 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.
Hmm, actually TomsHardware had it running at 60hz with two HDMI cables, but the article points out the challenge is the display card. I think there's a rational reason why the big, vertically integrated companies are the ones driving new panels. If they came up with an innovative, new LCD panel, they'd still have to wait for someone else to throw it in a shipping product before real demand materializes. Short of that the risk is insanity, and the OEMs themselves are unable to create a market for these new parts themselves. They're the only ones who can go up to a OEM and say "I want you to build this brand new part, to these specs, and I can guarantee you millions of units". The only people who have been able to move the needle on this sort of tech and fab are Apple, Google, Samsung, et al. It takes a large measure of guaranteed demand for anyone to drop that kind of cash. It's also risky as hell - making a high-DPI LCD panel isn't like making a rocking chair in your garage, there is an enormous startup cost. Not only are the yield rates low, but your cost per panel increases dramatically since you have fewer units to spread over all your tooling and fab buildout.
Dell u3014 review full#
Fabrication of any kind of semiconductor is full of fixed costs.