Dell UltraSharp U3425WE
This is what matters about Dell UltraSharp U3425WE.
About
The smaller 3440x1440 sibling of the U4025QW — its HDMI port is stuck on the older TMDS signaling scheme despite an HDMI 2.1 label, choking the panel's true 120Hz ceiling down to 100Hz.
- HDMI version
- 2.1
- DisplayPort version
- 1.4
- Max resolution
- 3440x1440@120Hz
- Requires DisplayLink driver
- No
Ports: 1× HDMI 2.1, 1× DisplayPort 1.4, 1× Thunderbolt 4 (upstream), 1× Thunderbolt 4 (downstream), 1× USB-C (upstream), 2× USB-C (downstream), 4× USB-A, 1× Ethernet (RJ45) and 1× Audio line-out 3.5mm
Confirmed with
- Notebook (generic)
Despite an HDMI 2.1 badge, the port uses legacy TMDS signaling rather than the modern FRL scheme, choking the panel's true 120Hz ceiling down to 100Hz over HDMI — reaching the full refresh rate requires DisplayPort or a Thunderbolt/USB-C connection instead.