A:Answer I don't know the PSU model, but I have heard that is is not the greatest quality, so you might want to replace it if you can afford it. It is likely 650W give or take like the previous person said. As for cooling, it is surprisingly good. I didn't expect a lot when I bought it, and the fans are strangely all exhaust (on front and back) which is not an ideal setup. Surprisingly, the cooling holds up well, and my GPU temps idle at around 50 degrees during low stress and somewhere between 60-65 degrees while gaming (Call of Duty: Warzone, for example). Those temps are not amazing, and it would do you well to improve the fan setup and/or add a few more fans, BUT I am not worried about temp affecting performance at all. As I am writing this after hours of low intensity gaming, my GPU temp is at 52 degrees. I have no data for CPU temps, but the AIO cooler seems to be doing its job well as I haven't had any issues.
I hope this helps.
