PSU for SLI 970'S

[DaMainMan]

Hey everyone,

 

I plan on getting another 970 for my new build and I'm not quite sure what kind of power supply I need.

I've searched on the web and some forums recommend at least 850W while others (and some power-calculators) suggest that 650w is enough.

 

I plan on running a 6700k with AIO cooling, SSD + HD and the usual other stuff. Nothing fancy ontop.

What do you guys think?

[Centurius]

A good quality 750 Watt should do, 650 could work but is cutting it close and beyond its most efficient.

[Xenift]

Would specifically recommend the EVGA G2 750W because you need to overclock your CPU.

[IAcKI]

I use the AX760 and it runs fine with mine.

[Rev:)]

970s can consume  a good amount of power and I recommend a corsair ax860 or ax860i. but if you have a more power hungry cpu you might want something a tad bigger like a EVGA supernova 1000 ps

[Narnash]

To have 850W would be better a 970 can grab up to 270-300W(under full, full, full load usually under hard work 250W) (note that some PSUs will be noise If you run them near the power Limit)

[Narnash]

1 minute ago, Narnash said:

To have 850W would be better a 970 can grab up to 270-300W(under full, full, full load usually under hard work 250W) (note that some PSUs will be noise If you run them near the power Limit)

 

Edited February 3, 2016 by Narnash
Double Post and can't find a delete option, sorry

[STRMfrmXMN]

650W is r commended for SLI 970s. Three un-overclocked 980s on a 3960X don't even breach 600W so two overclocked 970s on a lesser CPU will be more than ok.

[IAcKI]

1 minute ago, Rev:) said:

970s can consume  a good amount of power and I recommend a corsair ax860 or ax860i. but if you have a more power hungry cpu you might want something a tad bigger like a EVGA supernova 1000 ps

Be a complete waste of money going for a 1000w PSU. 850 justifiable.

[NationsAnarchy]

750W should be enough imo

[DaMainMan]

So would it be safe to say that 750W would be the best/safest choice here?

[Unhelpful]

5 minutes ago, Rev:) said:

970s can consume  a good amount of power and I recommend a corsair ax860 or ax860i. but if you have a more power hungry cpu you might want something a tad bigger like a EVGA supernova 1000 ps

No... No... No. See @STRMfrmXMN's post.

[AresKrieger]

10 minutes ago, DaMainMan said:

So would it be safe to say that 750W would be the best/safest choice here?

 

It's what I would get, it gives you headroom, allows for carefree overclocking, and the PSU would operate efficiently when under heavy load with a 750W. Either way you wouldn't need more than that.

[Prolly_dyin]

My system pulls at the most 530w from the wall. That's with a 5820k running at 4.5Ghz and 2 gtx 970s in sli running at around 1450mhz. So ideally for the 6700k and sli 970s probably 600-650w psu to land in the area for max efficiency under load.