Power Supply for an R9 390

[davidcazares64]

I recently got an R9 390 for $180 on eBay, I was initially planning to get an RX 580 so I selected a Corsair CX 550 (the new one) to be my power supply. Im not sure if the CX 550 is beefy enough for my graphics card.

Any thoughts?

Specs
PCPartPicker part list: https://pcpartpicker.com/list/JHxdq4
Price breakdown by merchant: https://pcpartpicker.com/list/JHxdq4/by_merchant/

CPU: AMD - Ryzen 3 1200 3.1GHz Quad-Core Processor ($93.90 @ OutletPC)
Motherboard: MSI - B350M MORTAR Micro ATX AM4 Motherboard ($78.99 @ Newegg)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3000 Memory ($154.99 @ Newegg Business)
Storage: Samsung - 970 Evo 250GB M.2-2280 Solid State Drive ($107.99 @ Amazon)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($58.87 @ OutletPC)
Video Card: Asus - Radeon R9 390 8GB Video Card (Purchased For $180.00)
Case: Cooler Master - MasterBox Q300L MicroATX Mini Tower Case ($39.99 @ Amazon)
Power Supply: Corsair - CX (2017) 550W 80+ Bronze Certified ATX Power Supply ($29.99 @ Newegg)
Total: $744.72
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-06-25 11:31 EDT-0400

 

[King_V]

The R9 390 is a 275 Watt video card. I'd suggest a more powerful PSU, to be on the safe side.

 

[davidcazares64]

Would you think a Seagate 620 Watt Modular PSU would suffice?

 

[King_V]

I'm not familiar with Seagate's power supplies - though SeaSonic, among others, are highly rated. I went with a SeaSonic 650W when I upgraded, though I went a little bit overkill.

I'm hoping others with more PSU knowledge than I can chime in with recommendations regarding brand, etc.

 

[jankerson]

I recently got an R9 390 for $180 on eBay, I was initially planning to get an RX 580 so I selected a Corsair CX 550 (the new one) to be my power supply. Im not sure if the CX 550 is beefy enough for my graphics card.

Any thoughts?

Specs
PCPartPicker part list: https://pcpartpicker.com/list/JHxdq4
Price breakdown by merchant: https://pcpartpicker.com/list/JHxdq4/by_merchant/

CPU: AMD - Ryzen 3 1200 3.1GHz Quad-Core Processor ($93.90 @ OutletPC)
Motherboard: MSI - B350M MORTAR Micro ATX AM4 Motherboard ($78.99 @ Newegg)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3000 Memory ($154.99 @ Newegg Business)
Storage: Samsung - 970 Evo 250GB M.2-2280 Solid State Drive ($107.99 @ Amazon)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($58.87 @ OutletPC)
Video Card: Asus - Radeon R9 390 8GB Video Card (Purchased For $180.00)
Case: Cooler Master - MasterBox Q300L MicroATX Mini Tower Case ($39.99 @ Amazon)
Power Supply: Corsair - CX (2017) 550W 80+ Bronze Certified ATX Power Supply ($29.99 @ Newegg)
Total: $744.72
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-06-25 11:31 EDT-0400

Defiantly need a better PSU than that, with high power draw cards it's best to stay away from budget units.


Recommend:

Seasonic Focus Plus 650W
EVGA G2 or G3 650W
Corsair RMX 650W

 

[Rexper]

With a beefier CPU, a system including an overclocked R9 390 pulled ~315w from the PSU, on average at a gaming load. Yours would consume even less. There is no need for a 650w power supply.
The CX550 can deliver 550w on the 12v rail, so you are fine there. It has enough connectors, and it’s a good (just good) power supply.

Some may suggest a top quality power supply, such as a Bitfenix Whisper, Corsair RMX, be Quiet Straight Power 11, Seasonic Focus Plus. That’s up to you.

The Seasonic 620 is worse than the CX550. Avoid.