Virtual Network Computing (Vnc) - Extron electronics Quantum Ultra Series User Manual

The following table gives a breakdown of common resolutions and the number of sources
at that native resolution that can be passed down a 400 Gbps HyperLane bus:
Width
NOTE: Bandwidth values do not include overhead data required for bus management.

Virtual Network Computing (VNC)

The Quantum Ultra can decode multiple VNC streams from servers loaded on remote
desktops. The VNC streams can originate on the same network used for control or
on a separate network and accessed using the second LAN port available on the
Quantum Ultra.
Desktop resolutions up to 3840x2160 are supported, but the refresh speed of the desktop
content depends on the amount of content moving or changing on the remote desktop.
The size of the VNC window on the Quantum Ultra output and the number of VNC
sources simultaneously displayed also influence the refresh rate of the content.
The following table shows expected frame rates of a 1920x1080 desktop at various sizes,
quantity, and amount of content in motion:
VNC
Desktop
1920x1080
Height Frame Rate Bandwidth (Gbps) Number of Native Sources
1024 768 60
1280 720 60
1920 1080 60
1920 1200 60
1600 1200 60
2560 1600 60
3840 2160 30
4096 2160 30
3840 2160 60
4096 2160 60
4096 2400 60
Raw video throughput is slightly lower.
Window Number of
Size Windows
3840x2160 1
3840x2160 1
1920x1080 1
1920x1080 1
1920x1080 16
1920x1080 16
960x540 64
Quantum Ultra Videowall Processing System • Introduction
1.42
1.66
3.73
4.15
3.46
7.37
7.46
7.96
14.93
15.93
17.69
Amount of Average Frame
Motion Rate (ftbs)
Full screen 4
1/9 desktop 15
Full screen 4
1/9 desktop 20
Full screen 1
1/9 desktop 10
1/9 desktop 1
254
217
96
86
104
48
48
45
24
22
20
Network
Usage (Mbps)
18
18
18
22
100
100
120
7