Dell Alienware AW3423DWF vs Dell U4021QW

A side-by-side spec comparison of the Dell Alienware AW3423DWF and the Dell U4021QW. We line up every specification, highlight the winner of each, and tally an overall verdict so you can decide which monitor is right for your build.

Side-by-side specification comparison of Dell Alienware AW3423DWF and Dell U4021QW.
Specification	Dell Alienware AW3423DWF $699.00 Winner Buy on Amazon	Dell U4021QW No price data
Size	34.2"	40"
Panel Type	QD-OLED	IPS
Resolution	3440x1440	5120x2160
Refresh Rate	165 Hz	60 Hz
Response Time	0.1 ms	5 ms

Dell Alienware AW3423DWF

specs won

Dell U4021QW

specs won

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