I don't know the exact model, but it is an Antec one and has been in my system for almost 3 years. I have an i5 6400 and GTX 1060 3gb in it right nowDepends on the PSU. 650w sounds a lot and would be more than enough in your case. There are junk PSUs out there claiming big wattage but can and do make nightmares come true 🙂
What's your power supply model?