CreepX :
KKAW :
CreepX :
KKAW :
RCFProd :
It is enough, but the power supply is not good quality.
An example of a good quality unit for the R9 390:
Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($73.99 @ SuperBiiz)
Total: $73.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-07-25 13:34 EDT-0400
I'm going to say this is better, 750W is an overkill.
SeaSonic X Series 660W 80+ Gold Certified Fully-Modular ATX Power Supply
Well both of those are very expensive , is there a better PSU for a smaller budget? What about this one : EVGA 100-B1-0600-KR, 600W, 2x PCI-E 6+2, 6x SATA, 3x Molex [80 Plus Bronze]?
650W is the minimum i would go with 600W = not worth taking the risk
A guy on Yt was able to run the R9 390 on a 600 W PSU and had no issues.
Either
1. He had an excellent quality PSU and not on high load CPU & GPU.
2. He did not test it when CPU & GPU was on full load.
3. He did not test if the PSU was bottlenecking.
4. He did not test if the PSU was able to work without crashing the PC for a long time.
Not worth the risk. The PC will boot up no problem it's the health of the PC & issues stated above that are the issues.