R9 390 and Wattage in AMD build

[saltflats25]

I have a FX-6300 clocked at 4.3GHz running at a vcore of 1.38. My PSU is an EVGA 650 GS (650 Watts). Would I run into any problems wattage wise?

 

[TheDankMemer]

You won't have problems running the card 650w should be enough. You could experiment with OCing that card but that'd be up to you.

 

[Dark Lord of Tech]

That power supply is a great fit it's a high quality model made by SEASONIC and plenty of power.

A Radeon R9-390 NEEDS 30 amps on the 12+ rail and a 550w to 650w power supply with 1 PCIE 6+2 power connection , and 1 - 6 pin PCIE power connection.

Your PSU EXCEEDS the requirements.

 

[badboyrog2]

Some power supply units are rated for continuous output while others are rated at peak. "Continuous" means that the power supply is rated to run at it's maximum capability for no pre-determined period of time, while "Peak" indicates that the power supply will only run at the specified wattage for a brief period of time, possibly only a few seconds or up to a minute. This number is typically about 100W more than the power supply's actual continuous rating.

so depending of the specs of the psu , it will dictate you the max continuous rate
so your psu will work , but less power capability psu will run at high and heat up the components , thats why they suggest a 750W and more

but if your are not going to overclock , you will be ok

 

[Archaic59]

Your system, as configured, should remain under 400 watts total system power use at full load. Even if you hit peaks slightly above that you'll be fine with the PSU you have (EVGA 650 GS) since it is high quality and can actually deliver its' rated power.

 

[ko888]

System Power Supply Requirements for a single Radeon R9 390
• AMD specifies a minimum of a 650 Watt or greater system power supply. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)
• the system power supply must also have a maximum combined +12 Volt continuous current rating of 42 Amps or greater
• the system power supply should also have at least one 75-Watt 6-pin and one 150-Watt 8-pin PCI Express supplementary power connectors. There are some non-reference design cards that require two 150-Watt 8-pin PCI Express supplementary power connectors (e.g. Sapphire R9 390 Nitro).

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

EVGA SuperNOVA 650 GS (220-GS-0650-V1)
• OEM: Seasonic
• maximum combined +12 Volt continuous current rating: 54 Amps <===== More than Sufficient
• four 150-Watt (6+2)-pin PCI Express supplementary power connectors <===== Sufficient
• Ambient Temperature Maximum (i.e. without derating): 50°C
• Full Modular Output Cables: Yes
• Passes Official Intel Haswell Compliance Test: Yes
• 80 PLUS GOLD Efficiency Certification
• 5 Year Limited Warranty


You're completely safe even with overclocking of both the CPU and GPU.