Supported resolution of Raspberry PI?

[cuttling]

Hi, I'm using Dakboard with Raspberry PI 3B+ with QHD monitor.
When I tried to select QHD resolution(2560x1440) in configuration window, I couldn't find the QHD option from the list.
And the maximum resolution of the list is just FHD, 1920x1080.

In this case,

• Does Dakboard support FHD at the maximum with Raspberry PI 3B+? And doesn't it support custom resolution option?
• If so, does Raspberry PI 4B would support QHD resolution?

Thank you.

[markphelan]

I tried for hours but couldn't get the 3B+ to output higher than 1080p.
The 4 works perfectly at this resolution and has been running a QHD display for me for many months.

[cocarrig]

Hi,

The Pi3B(and +) only support a maximum resolution of 1080p. Higher resolutions on the Pi3B models are only possible with refresh rate reductions and other modifications that are not recommended or supported.

The Pi4B variants can support up to 4K, and will support QHD with DAKboard OS.