Display Bandwidth; Display Resolution Table - Dell WD19DC User Manual

3. Under the Multiplay displays section, select Extend these displays.

Display bandwidth

External monitors require a certain amount of bandwidth to work properly. Monitors with higher resolution require more bandwidth.
• DisplayPort High Bit Rate 2 (HBR2) is DP 1.2 (5.4 Gbps maximum link rate per lane). With DP overhead, the effective data rate is 4.3
Gbps per lane.
• DisplayPort High Bit Rate 3 (HBR3) is DP 1.4 (8.1 Gbps maximum link rate per lane). With DP overhead, the effective data rate is 6.5
Gbps per lane.
Table 2. Display bandwidth
Resolution
1 x FHD (1920 x 1080) display @60 Hz
1 x QHD (2560 x 1440) display @60 Hz
1 x 4K (3840 x 2160) display @30 Hz
1 x 4K (3840 x 2160) display @60 Hz

Display Resolution Table

Only for Recommended Systems from
connection and does not support systems that use single Type-C cable.
Table 3. WD19DC
Display Port Available Bandwidth
HBR2 (HBR2 x4 lanes - 17.2 Gbps)
18 Setup of External Monitors
Dell Commercial Docking Compatibility
Single Display Dual Display
(maximum (maximum
resolution) resolution)
DP1.4/HDMI2.0/ • DP1.4 +
MFDP Type-C: DP1.4: QHD
4K (3840 x 2160) (2560 x 1440)
@60 Hz @60 Hz
Minimum bandwidth required
3.2 Gbps
5.6 Gbps
6.2 Gbps
12.5 Gbps
Guide. The following table only addresses the dual-cable
Triple Display
(maximum resolution)
• DP1.4 + DP1.4 +
HDMI2.0:
Quad Display (maximum
resolution)
N/A