What PowerSupply for SLI Gtx 1080ti?

pvlbpc · Oct 18, 2017

What is the best source option for a GTX 1080 Ti SLI?
I looked at these models:

EVGA SuperNova 1200w Titanium
EVGA 850w Gold G3 PFC active
Corsair AXi 860i ( I'm from Brazil and it would have to matter, and I do not know how to care. )

What is the best option for a gtx 1080i SLI? I need 1200w or 850w Can you?
I accept suggestions

superninja12 · Oct 18, 2017

850w, all 3 are great.

suggestion? seasonic prime titanium 850w

10/10 http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=487

pvlbpc · Oct 18, 2017

superninja12 :

will 850w be able to support 2 GTX 1080 ti? and i9, 32gb ram, ssd 960 pro monitor 2k or 4k?

jankerson · Oct 18, 2017

pvlbpc :

If you are going with an i9 get the Prime Titanium 1,000W.

superninja12 · Oct 18, 2017

pvlbpc :

easily:

https://nl.hardware.info/reviews/7263/18/nvidia-geforce-gtx-1080-ti-review-incl-sli-snelheidssprong-voor-dezelfde-prijs-testresultaten-stroomverbruik

381w for 1 ti including other components even if u do that times 2 its below 850w easily( and u dont have 2cpus etc)

the recommanded psu for a 1080 ti sli is also 850w

jankerson · Oct 18, 2017

superninja12 :

If he OC's that I9 he will need more than 850W PSU.

They take crazy amounts of power when OCed, I saw close to 400W just for the CPU alone.

Add the 2x GTX 1080Ti to that....

I9's can draw insane amounts of power once they are OCed.

pvlbpc · Oct 18, 2017

EVGA 1200w Titanium Supernova is better?
Have EVGA 1300w Gold, its good?

jankerson · Oct 18, 2017

pvlbpc :

EVGA 1200w Titanium Supernova would be fine, great unit.

superninja12 · Oct 18, 2017

jankerson :

superninja12 :

If he OC's that I9 he will need more than 850W PSU.

They take crazy amounts of power when OCed, I saw close to 400W just for the CPU alone.

Add the 2x GTX 1080Ti to that....

I9's can draw insane amounts of power once they are OCed.

alright please come back to earth.

http://www.tomshardware.com/reviews/msi-geforce-gtx-1080-ti-gaming-x-11g,5036-4.html

with an i7 6900k which has got the same tdp as an i9 7900x (140w), you will easily stay below 850w with a 1080 ti in sli.
And were talking about a seasonic prime titanium.

jankerson · Oct 18, 2017

superninja12 :

jankerson :

alright please come back to earth.

http://www.tomshardware.com/reviews/msi-geforce-gtx-1080-ti-gaming-x-11g,5036-4.html

with an i7 6900k which has got the same tdp as an i9 7900x (140w), you will easily stay below 850w with a 1080 ti in sli.
And were talking about a seasonic prime titanium.

That's at stock speed for the i9.

Oced they draw crazy amounts of power, HUGE difference.

He will over draw any 850W PSU.

superninja12 · Oct 18, 2017

http://www.tomshardware.com/reviews/intel-core-i9-7900x-skylake-x,5092-10.html oced 230w cpu
http://www.guru3d.com/articles-pages/asus-rog-strix-geforce-gtx-1080-ti-review,7.html oced 285w gpu

230 w oc
285
285
40w for the rest of the system and this is extremly overkill

lets add this all up and we get 840w.

edit: https://www.hardocp.com/article/2016/10/03/seasonic_flagship_prime_850w_power_supply_review/6
torture test 960w, solid pass

jankerson · Oct 18, 2017

superninja12 :

Even with your numbers of 840w..... Have to add 20% for headroom so that's still a 1,000w PSU.

Actually the CPU is well over 350w OCed power draw.

Saw close to 400w. (391w) OCed.

So

400+ 285+285..... Is 970...... That's worse case. (Would be closer to 260W or 270W in gaming depending on Voltage etc)

Reason why I said 1,000w PSU.

That's for the 7900X.... If he gets the 12+ core cpu's they are draw even more.

Saw the 7980XE draws close to 700w OCed..... That's just CPU draw by the way, no graphics test.

DRagor · Oct 18, 2017

jankerson, if you would be kind to give any links that would back-up your claims? Because superninja did just that. And there's no reason to think reviews he links are wrong ...

jankerson · Oct 18, 2017

DRagor :

One of the links he posted shows well over 350w OCed power draw in CPU tests..... LOL

He just chose to ignore it.....

So.... I don't need to even bother... There is no debate here, the numbers are what they are.

pvlbpc · Oct 18, 2017

In theory, 850w PCF active Gold works, however 1200w would be better? I'm thinking of waiting for the i9 7980xe, would a 1600w source be needed for it?

jankerson · Oct 18, 2017

pvlbpc :

Well a 1,000w + to be safe with headroom for the 7900X, a 1,200W if you want to get the other one.

That 7980XE is crazy... All will depend on actual OC, voltage and cooling.... You won't 4.9 GHz and run it at that I think, the thing I saw it overpowered a custom Water Cooled setup. Temps were over 105C. LOL

I would say a 1200w + PSU.

pvlbpc · Oct 18, 2017

I'm going to 1200w so, would it be effective for the 7980xe too? even in sli and oc?

jankerson · Oct 18, 2017

pvlbpc :

I think you would be fine unless you get crazy like going with LN2 OCing or something nuts like that.

jankerson · Oct 18, 2017

Here is Jay's 7980XE video.

[video="https://www.youtube.com/watch?v=GJ1M3Gubbi8"][/video]

DRagor · Oct 18, 2017

jankerson :

Well. So, for 7980, dialed to 4.8, he got 750 W, from the wall. With a GPU that takes up to 300 W. That means CPU takes 400 W at most. Waaay away from your claims of 700 W.

jankerson · Oct 18, 2017

DRagor :

That was just CPU test...

He didn't run any graphics tests so the GPU was not even stressed, was maybe drawing like 20w.........

The GPU was just there to have something on the monitor, might as well have been a GT 710 or something since the 7980XE doesn't have graphics.

What is it with you people, don't know what you are looking at? :sarcastic:

I post a video and you still don't get it.

And Jay explained what he was doing... Exactly....

It's not that freaking hard to figure out.

logainofhades · Oct 18, 2017

Have to agree with jankerson here. Those i9's are power hungry beasts when overclocked.

jankerson · Oct 18, 2017

logainofhades :

Sorry for the blow up... :heink:

But sometimes.....

I idid a lot of research on them because I was thinking about building one, then chose not to going with the I7 7700K instead due to the power draw and the I7 7700K is better for gaming and one heck of a lot cheaper. A waste for what I use my systems for.

okcnaline · Oct 18, 2017

I'm just going to guess the i9-7980XE takes up to 350W under a torture loop. http://www.tomshardware.com/reviews/intel-core-i9-7900x-skylake-x,5092-10.html

Yeah, I just can't find an i7-7980XE review that gives some proper graphs on power consumption.

One GTX 1080 Ti takes like a max of 250W gaming. So 850W is cutting it extremely tight. Maybe 1000W?

jankerson · Oct 18, 2017

okcnaline :

Was taking 753w from the wall running Cinabench CPU test only..... That's CPU draw, no graphics draw, GPU idling. :ouch:

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