Aurora R8, non-Dell PSU replacement?

Yes, you can replace the PSU in your Aurora R8 with a standard ATX power supply.  Considering modular to help with cables organization and 140mm to 150mm depth for a perfect fit to PSU chassis.

your non-Dell psu needs to have one 8 pin EPS and one 4 pin CPU connectors (or two EPS 8 pin connectors) for R8 motherboard has a proprietary GPU_PWR socket (black socket north of PCIe x 16 slot) that must have a 8 pin EPS connector plugged in to work.   R8 CPU socket (white socket on top of board) is 4 pin which needs a 4 pin connector too.  you can also plug a second 8 pin EPS connector in that socket.

(note some psu has only one 8 pin EPS and no second 4/8 pin which would not work in R8)