Psu for gtx970 sli (or r9 380x)

xiorell · 23 Dec 2015 at 20:11

Planned spec

Z170
i5 6600k
4x ddr4 sticks
Ssd
7200rpm hdd
Dvd drive
Poss water cooler later

650w good enough to run 2x gtx 970? Or maybe r9 380x in xfire

RJC · 23 Dec 2015 at 20:18

I probably would look at 750w.

olivier renault · 23 Dec 2015 at 21:23

at least 750W, to be comfortable. and with enough PCI-E connectors (none of those adapter nonsense).

pastymuncher · 23 Dec 2015 at 21:51

A quality 650w would do it as reviews show total system power draw of sli 970's to be around the 450w mark. I would rather see 750w though for the extra headroom plus the psu won't be working so hard so should run cooler and quieter.

My basket at Overclockers UK:

1 x EVGA SuperNova G2 750W '80 Plus Gold' Modular Power Supply= £94.99

Total: £105.49
(includes shipping: £10.50)

Bossman · 24 Dec 2015 at 14:32

I'm in a similar situation and each time I've entered the system details into a PSU calculator and the power draw always seems to come out < 600W.

Would the Corsair RM650i be sufficient for a similar spec system?

wallofsound · 26 Dec 2015 at 10:58

As this is on offer, is this a good PSU for the OP's set-up (looking to build similar myself).

https://www.overclockers.co.uk/cougar-gx-v3-800w-80-plus-gold-modular-power-supply-ca-012-cu.html

pastymuncher · 26 Dec 2015 at 15:35

No. The oem is HEC who are mediocre at best. There are no reviews for the V3 but the V2 units got pretty poor reviews, 7.5-8.5 out of 10 and with the choice available these days at reasonable prices I wouldn't touch a psu that scored less than 9 out of 10 and wasn't from a top tier oem.

The EVGA Supernova G2 units are what you should be looking at. That 10 year warranty plus the oem (Superflower) and specs makes them pretty much unbeatable for their price.