You can chat Dell sales to see if they will sell you a replacement psu for your model.  You'd have to give them your service tag to verify part numbers, but I believe they are the two Delta or Huntkey options that have been around since forever (but now with the 1000W option): 0WTGN = 1000W, Delta Gold psu0PDJK = 1000W, Huntkey Gold psu
I recently got a Aurora R10 3800X, 5700XT but only with a 550W PSU. I want to try a different GPU and I think i want more breathing space of the PSU. I have not found the part number, and even more important where to buy it? Anyone has upgraded the PSU of an Aurora R10 either with dell or third party PSUs?
Aurora R10, where to buy the 1000W PSU?