That's $515-$530 after tax for many buyers. I don't think I would buy another at that price. And the GPU is a 1650 super which can be up to 40+ percent faster than the base 1650.
About the 400W platinum PSU: After watching the Gamers Nexus review of the 500W that comes with the Dell, it looks like this could be part of the same line from Lite ON. Using 3 separate +12v rails, all limited to their own max wattage. In this case 16W per rail. That means approx 200W? or a little less, power limit for GPU. Though not a big deal given the case's size and its thermals, which are also limiting. Maybe max out around a RTX 2060?
Kind of a bummer to see this type of PSU being used. As if the proprietary connectors were not bad enough, now you have hard safe limits on what you can load on a given +12. Boo I say, Booooo.