Which PSU for 6x R9 390? - page 3. | Bitcointalksearch.org

Vaccomondus

full member

Activity: 224

Merit: 100

they consume 280w when mining, so you need to lower the tdp to like 70, but then it will be like just running 5 390, but in this way you can buy 1500-1600

Deki1904

sr. member

Activity: 490

Merit: 250

Thanks.

I read about that you can reduce the tdp. Not sure what that means in W at the and and in MHS for the R9 390....

I should maybe use the 380... less power. Undervolted I think 190W - 20mhs?

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

I don't have a 390 or any AMD cards for that matter so wait for others to chip in but it looks like to me that 2 x 750W PSUs won't be enough, take a look at this:

These are the maximum power consumptions during a torture test which is pretty similar to mining.

6 * 323 = 1938 and a PC alone is generally about 70 watts so you're just a tad bit over 2000 watts.
I'd also recommend having 10-20% overhead (depending on PSU quality) so I'd get PSUs that could handle a total of 2200-2400 watts.

Deki1904

sr. member

Activity: 490

Merit: 250

Hi, im not sure how much Power i need for a Rig with 6x R9 390

2 x 750 Watt?...

This one maybe:
RHOMBUTECH® 1000 WATT ATX PC-Netzteil | Gaming-Netzteil | Saving Power | Effizient bis zu 89% | Voll-modulares Kabelmanagement | AKTIV PFC | Ultra Silent | 140mm kugelgelagerter Lüfter

Plus

RHOMBUTECH® 800 Watt PC-Netzteil ATX | Gaming-Netzteil | Saving Power | Effizient bis zu 84% | AKTIV PFC | Ultra Silent | 140mm kugelgelagerter Lüfter

Or 2 times one of this two:

FSP FFORTRON Netzteil Aurum 750 ATX 2,3 1X20+4Pin 1X4+4Pin 4X6+2Pin 1X8Pin 8XSATA 5Xmolex 1XFDD 80Plus Gold Cable Management von FSP

oder

Corsair CP-9020082-EU RMi Serie RM750i ATX/EPS Voll Modular 80 PLUS Gold 750Watt, Netzteil, EU von Corsair

Thanks

Topic: Which PSU for 6x R9 390? - page 3. (Read 3862 times)