@John-M @jmcphee please see this post where another user upgraded from a GTX 1650 to an RTX 4060 Graphic card upgrade - #9 by MalcolmC
The cost of a new power supply does need to be factored in to the decision.
Both my 2060s, one a two fan and the other a 1 fan, came from Ebay, as did another Dell U2515H to add to one I bought new in 2015 and two 1920 x 1200 displays and two of my Seasonic Platinum power supplies (which were essentially open box but with everything included!?).
Perhaps I have been lucky, the Dell monitor was beautifully packed for transit and was in slightly better condition (the plinth) than mine and was a bid item, as were the 2060s.
Regards
Bryan