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DisplayPort 1.3 vs. HDMI 2.0

Tuesday, February 24, 2015

How does DisplayPort 1.3 compare with HDMI 2.0 in terms of performance?

When comparing DisplayPort 1.3 with HDMI 2.0, DisplayPort 1.3 has several key advantages. First, the video bandwidth of DisplayPort 1.3 is much higher than HDMI 2.0.  This means that DisplayPort 1.3 can support higher resolution timing such as 8K at 60Hz, where as HDMI 2.0 can support 4K at 60Hz max. Second, DisplayPort 1.3 has the ability to transmit multiple video streams on one cable through the MST feature allowing multiple monitors to be daisy-chained together (although there are limitations as to the number of displays and resolution supported, which makes it more appropriate for desktop uses than video walls).  Finally DisplayPort includes installer-friendly locking connectors. HDMI doesn’t natively support locking connectors though many Planar products do provide support for threaded hex nuts for special-locking HDMI connector which installers can find in specialty stores or through distribution.

HDMI 2.0 does have two main advantages over DisplayPort 1.3. First, the max cable lengths achievable on HDMI are much higher than DisplayPort. Distances of 30 meters with 1080p are not uncommon with Planar displays. We’ve seen it work with 40 meters at lower resolution. For 4K on our Planar UltraRes products, we’ve regularly been able to get about 10 meters. On DisplayPort, the standard lists 3 meters maximum. Now, longer distances are possible depending on resolution and bit depth, but only up to about maybe 15 meters or so max at a lower resolution and only with a very high quality source and display. And then finally, HDMI has a much higher install base. Nearly every consumer source out there and displays both contain HDMI. Your set top boxes, your Blu-Ray players, your TVs, smart phones and tablets - everything has HDMI. Whereas DisplayPort is mainly confined to PCs and some desktop monitors and a few larger format displays today, but is growing in importance as a standard in the industry for connectivity.

You can see the two standards compared in the table below:

 

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