Your 1440p Monitor Could Be Using a 4K Panel
German site Prad.de reports that sources close to monitor panel manufacturers told them that the production cost of a 27" 4K 3840x2160 panel is lower or at least equal to that of a 27" 2560x1440 QHD panel. This drives monitor manufacturers to use 4K panels in monitors that are specified as QHD - when panel supply is low, or monitor demand is high.
The sources did not mention any specific monitor manufacturer or model, but it's highly probable that some 1440p monitors in the hands of customers today use a 4K panel. Obviously you're not gonna get 4K resolution when paying for a QHD monitor. Rather the panel firmware is configured to report its maximum capability as 1440p, and internally scale the input signal accordingly, which may result in reduced image quality.
The sources did not mention any specific monitor manufacturer or model, but it's highly probable that some 1440p monitors in the hands of customers today use a 4K panel. Obviously you're not gonna get 4K resolution when paying for a QHD monitor. Rather the panel firmware is configured to report its maximum capability as 1440p, and internally scale the input signal accordingly, which may result in reduced image quality.