advice for new psu

[sauronjag]

Hi all

i have an old raidmax rx-730SS. this is for a single r9 280x gpu on an asus sabertooth 990fx r2.0 motherboard.

a friend gave me his old r9 280x, giving me 2 to work with but the PSU doesn't have two PCI-E power cords.

want something safe, reliable, and can easily support double r9 280x gpu. any suggestions?

 

[MrN1ce9uy]

Well, Raidmax doesn't sell very high quality power supplies. Also, you didn't mention your CPU. I'm hoping you don't have a 220W CPU. If you do please let us know.

This one is a good price on sale:
PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA SuperNOVA G2 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($94.94 @ Amazon)
Total: $94.94
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-04-30 23:57 EDT-0400

Or the B2 if you miss the sale on the G2, and the B2 is really good also.
PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA B3 850W 80+ Bronze Certified Fully-Modular ATX Power Supply ($106.98 @ Newegg)
Total: $106.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-04-30 23:58 EDT-0400

There may be a cheaper unit that is just as good, but I'd have to let someone that knows about it suggest it because I don't know.

 

[sauronjag]

AMD fx 8120 8core 3.89ghz, (edit) so I believe only 125W

 

[Lucky_SLS]

^ upvote for the g2 850w
other options :
https://pcpartpicker.com/product/Bn3RsY/seasonic-power-supply-ss850am2
https://pcpartpicker.com/product/jX6BD3/seasonic-power-supply-ss850am
https://pcpartpicker.com/product/2VMFf7/antec-power-supply-hcg850m
https://pcpartpicker.com/product/JQbp99/seasonic-power-supply-x850

 

[MrN1ce9uy]

The Seasonic X-850 that Lucky_SLS is also on sale and would be just as good as the G2. https://www.superbiiz.com/detail.php?name=PS-SS850KM&c=CJ

You can see which power supplies are good from looking at the lists below.

Recommend tier 1, 2, or 3 - https://linustechtips.com/main/topic/631048-psu-tier-list-updated/

Recommend tier 1 or 2 - http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html

Good PSUs may seem a bit pricy, but definitely worth it in the long run.