3x RX580 on a 750w PSU?

[Migdilu]

Hi, i was building a mining rig, i'm starting with 2x RX580 but i'll add one more in the future. Price is important, i don't want to spend more unnecessarily, but also i don't want to buy a cheap psu that most likely will fail. I was looking at these PSU's, what do you think?.

1 dollar is 19,15AR$

- XFX XTR 750W ------------------------------2555 AR$
- Thermaltake Toughpower Rgb 750w ----- 2900 AR$
- Thermaltake Smart 750w ----------------- 1799 AR$
- Corsair CX750M ---------------------------- 2399 AR$
- Corsair CX850M ---------------------------- 3050 AR$
- XFX PRO 850W ---------------------------- 2769 AR$
- Thermaltake Smart M850w --------------- 2500 AR$

Thanks in advance, cheers!

 

[The Paladin]

specs say http://www.amd.com/en/products/graphics/radeon-rx-580 , 500w Recommended
I would not go with a 750w with 3 of them.
I would go higher

 

[Migdilu]

specs say http://www.amd.com/en/products/graphics/radeon-rx-580 , 500w Recommended
I would not go with a 750w with 3 of them.
I would go higher

I thought that specs are exaggerated because of super cheap psu's. I saw someone running it on 650w, are you sure 750w won't be enough?

 

[rcald2000]

I agree that 750 watts is not enough for three RX 580's. But if you want to know for sure, then Google the OEM of your precise RX 580 (e.g. Sapphire RX 580) and then look up the TDP. Multiply it by three and then add the wattage of your CPU). Then add a healthy reserve. No one would run three of those cards with a 750 watt PSU.