Because it uses a different type of link, it can support (at least) two screens over a single cable. There is of course a workaround: Thunderbolt. DisplayPort 1.4 doubles the available bandwidth, allowing for more and larger displays. DisplayPort has similar capabilities as HDMI DisplayPort 1.4 can transmit up to 32.4Gbs bandwidth, much more than HDMIs 18Gbps limitation. Ultra Slim Flexible 90 Degree right- angle A to A DisplayPort 1.4 cable, 2 meter, compliance with DisplayPort 1.4 Lasted version, bandwidth with 32.4Gbps. This is enough for at least two screens of this type. Although HDMI is widely used in most applications and consumer products, DisplayPort has some specific applications and uses that differ from HDMI which we will cover below. The description strongly hints at it only using 2 DisplayPort lanes.
#Displayport 1.4 bandwidth 1080p
Your 1080p screen indicates in its specs that it features "USB Type-C (Alternate mode with DisplayPort 1.4, USB 3.1 upstream port, Power Delivery PD up to 65 W)". The base bandwidth of DisplayPort 1.4 remains unchanged at 32. Adding a 1080p screen would require another lane, requiring the maximum amount of 4 lanes in the USB-C link. In a practical sense, DisplayPort 1.4 with DSC is far more capable than without it. One screen requires 5.63 GBit/s, meaning it requires two DisplayPort 1.2 lanes (but only 1 at DP 1.4). Cable length: 1m DisplayPort 1.4 cable with gold plated lockable connectors Resolution: 8K 60Hz / 4K 120Hz Bandwidth 32.4Gbps Support for HDR. USB-C DisplayPort Alt Mode features 1, 2 or 4 DisplayPort lanes (but no USB SuperSpeed at 4, only High Speed). VERSION 1.4 DP version, Maximum resolution DisplayPort 1.1, 3840 x 2160 / 30 Hz and 2560 x 1600 / 60 Hz DisplayPort 1.2, 3840 x 2160 / 60 Hz DisplayPort. High Bit Rate 2 DisplayPort (specified in DisplayPort 1.2, what you have) supports up to 5.4 GBit/s per lane. All told, DisplayPort 1.4 was designed with just enough bandwidth to support 3840x2160 at 120Hz with 8bpc color, coming in at 25.81Gbps of 25.92Gbps of bandwidth. As with previous generations of DisplayPort, DP 2.
This mainly depends on two factors: DisplayPort version and link configuration (number of DisplayPort lanes). DisplayPort 2.0 is the next great advance in connection standards that will usher in a new age of high bandwidth transmission, enabling higher resolution video, higher refresh rates, and greater HDR detail than ever before.Not all DisplayPort 2.0 devices will be equal, though. DisplayPort over USB-C often does not have the required bandwidth for more than two 1080p screens.
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