Can Over-clocked water cooled GTX 1080 Ti Load Wattage be around 450W ?

SPK123 · Apr 15, 2017

Can water cooled GTX 1080 Ti Load Wattage be around 450W ?

The Outervision PSU Calculator provides following result for GPU alone, excluding all other components

http://

It shows 491W 40.9A on 12V rail for GPU alone.

Given that water cooled GTX 1080 Founders Edition ( Can be more for EVGA Classified or FTW 3 GPUs with more power phases for Over-clocking ) easily reaches load wattage of 300W, can the GTX 1080 Ti use 400W or more in some instances ?

n0ns3ns3 · Apr 15, 2017

no, that can not be for the card alone without power modding, and even then, it will be probably need some LN2 and not liquid cooling.

SPK123 · Apr 15, 2017

n0ns3ns3 :

What do you suggest would be the absolute peak power consumption of ZOTAC GTX 1080 Ti Amp Extreme, when fully over-clocked ?

It's TDP is advertised as 320W on http://

Wouldn't it have many instantaneous spikes upto 450-500W ? The average falling around to around 400W when overclocked.

It is shown the 200W AVERAGE TDP GTX 1080 Founder's Edition has spikes upto 392W when overclocked on 4K,

http://

So, shouldn't the 12V rail that powers the GPU be 500W - for absolute peak spikes - to avoid coil whine in both Power Supply and GPU ?

junkeymonkey · Apr 15, 2017

what ever your card is set to in its bios ?

these card are too new to have any listed yet but heres a example

Board power limit
Target: 250.0 W
Limit: 300.0 W
https://www.techpowerup.com/vgabios/191128/evga-gtx1080ti-11264-170301

Board power limit
Target: 280.0 W
Limit: 330.0 W
Adj. Range: -50%, +18%
https://www.techpowerup.com/vgabios/190927/msi-gtx1080ti-11264-170320

unless you mod there bios that's all they will do

that +18% is 280w + 18% = 330w max

also zotac will crank there cards way up like there 980ti amp extreme is set up to 430w [that's sucking some power ]

Board power limit
Target: 390.0 W
Limit: 435.0 W
Adj. Range: -74%, +12%
https://www.techpowerup.com/vgabios/176541/zotac-gtx980ti-6144-150917

my card maxed loading [hybrid]

http://imgur.com/OKoBc7M

Board power limit
Target: 250.0 W
Limit: 275.0 W
Adj. Range: -40%, +10%
https://www.techpowerup.com/vgabios/178854/evga-gtx980ti-6144-151008

SPK123 · Apr 15, 2017

junkeymonkey :

Thank you for the response

What about GTX 1080 Founder's Edition touching 392W when overclocked at 4K ?

http://

Does this mean one should use a PSU with 400W 12V rail for the GPU alone ?

junkeymonkey · Apr 15, 2017

NVidia that's set and limited in there cards bios a reference card as that will be about 250w [217]

NVidia founders reference 1080 [not evga's or msi , ect...] nvidias cards
Board power limit
Target: 180.0 W
Limit: 217.0 W
Adj. Range: -50%, +21%
https://www.techpowerup.com/vgabios/183927/nvidia-gtx1080-8192-160509

NVidia founders reference 1080 ti

Board power limit
Target: 250.0 W
Limit: 300.0 W
Adj. Range: -50%, +20%
https://www.techpowerup.com/vgabios/190928/nvidia-gtx1080ti-11264-170118

12v+ rail needs to be figured on AMPS so you could figure that card limit is 300w so that means it can draw 25amps

300w / 12v = 25 amps for example just for that card alone

I'm sure you will be told a lot of stuff but me for my primary gaming rig with one strong card like a 1080 or 980 ti with a overcvlock on the gpu and cpu I don't use a 850w PSu and then its a good known solid build quality unit

there so cheap anymore today and then when I fire it up ...

not hoping I do and have issues cause I went to low and cheap on my PSU

Karadjgne · Apr 15, 2017

For a 1080ti you'll want to be looking around the better quality units of 650w+. That's a maximum of 375w draw possible on the gpu and 275w for the system. Maximums. Highly doubtful you'll ever see those as it's pretty near impossible to run a pc with every component at 100% loads.

junkeymonkey · Apr 15, 2017

you see my 980 ti easy hits it set limit from my screen shot

then look at that zotac 980 ti at 435w ??? lets see pci-e slot = 75w 8 pin = 150 so with the slot and 2 -8 pin that's a max of 375w from the board and psu ?? but then in amps that's just 35.8 needed from the 12v+ rali

now you got a 450w and if lucky its a true 450w psu with true 37amps at the 12v+ that card alone taps that all out and nothing left for the rest of the system figure a intel haswell cpu is 85w that's 7 amps for it

but you see here all the time ''oh, a 550w is all you need anything else is ''overkill'' '' ya I rather have all that overkill then finding out my unit is not cutting it and now going to buy another unit I should of bought the first time with that overkill involved

I got to go

good luck

SPK123 · Apr 15, 2017

junkeymonkey :

Hello thank you for the response

But what about mention of 392W absolute peak used by GTX 1080 Founder's Edition Over-clocked at 4K

Please check
http://

What if the 12V rail is not rated for 392W 32.66A ?

Would the PSU not coil whine, also causing the GPU to possibly coil whine ?

junkeymonkey · Apr 15, 2017

''But what about mention of 392W absolute peak used by GTX 1080 Founder's Edition Over-clocked at 4K

Please check
http://

???

cant be right unless they tampered with the cards bios and as for as I knowe theres no bios editor for Pascal cards

NVidia founders reference 1080 [not evga's or msi , ect...] nvidias cards
Board power limit
Target: 180.0 W
Limit: 217.0 W
Adj. Range: -50%, +21%
https://www.techpowerup.com/vgabios/183927/nvidia-gtx10...

ther card with that bios will stabilize the clocks when it hit that max or start downclocking to maintain the limit . that's all there is to it toms readings on that is full of crap in my opinion

like here from there sister company you see that's as TOTAL SYSTEM POWER not gpu alone

http://www.anandtech.com/show/11180/the-nvidia-geforce-gtx-1080-ti-review/16

now like here they show the cards power use for this 1080 ti at 267w

https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_1080_Ti/28.html

then you see that's well with in that range of the bios setting

Board power limit
Target: 250.0 W
Limit: 300.0 W
Adj. Range: -50%, +20%
https://www.techpowerup.com/vgabios/190928/nvidia-gtx10...

look at this where I did a experiment on my card near the bottom of this

http://www.tomshardware.com/answers/id-3384521/gpu-power-limit-issue.html

you see how the card self adjusted to its needs up to the top limit of my card bios specs ? [with in reasonable +/-]

Karadjgne · Apr 15, 2017

Junkey, granted the 12v rails carry the lions share of the load in any modern pc but they don't carry everything. Even gpus use the 3.3v and +5v rails to some small extent. As does the cpu.

On any given OC (except for the monster cpus like the FX 9's or the 2011+) you can almost bank on 200w as being right at the top of any cpu OC. Some will go slightly over, most will stay well under. Most mobo's, accessories, drives, fans will pull @100w for an average gaming system.

Pcie 8pin are actually good for @10A per 18ga feeder, so technically you could get @360w per connector, but at that wattage, it's more than likely you'll melt the connector. Even 7A is pushing it, normally 5A is recommended max. That's recommended 360w for both 8pins and the slot can carry as high as 90w without damage on the better Z boards. (wouldn't try it on a budget B). So yes, you could ostensibly get 450w from the pcie/slot to power that gpu.

But they don't run 100%, with a cpu at 100%,with the rest of the pc running 100%. Given your average pc with a 1080ti, it's recommended minimum is actually 600w. But there are no quality 600w psus, at all. Best option is 650w+, quality psu. Since you can afford a $700 gpu, you can afford a $70+ psu. That puts normal gaming in the 400-550w range.

Op. What if the 12v rail isn't rated for the current draw? Gpu shuts down. It's a spike, that's totally different electrically from a constant draw. Any quality psu of 650w or better is going to have a 12v rail(s) rated at somewhere around 52A or better, with 3.3v and +5v of 24A or better each. If you are worried about the psu failing to reach a 33A load for the gpu, the psu in question is inadequate by a long shot.

I'll say it again. For a gtx 1080ti, you need a 650w + psu. Minimum. If you prefer 850w, because you are paranoid, fine, so be it. It won't hurt. But there's absolutely no reason to aim for a 1300w monster psu either.

junkeymonkey · Apr 15, 2017

''I'll say it again. For a gtx 1080ti, you need a 650w + psu. Minimum. If you prefer 850w, because you are paranoid''

because you are paranoid' ? no just insure I got a psu incase I decide to heave oc or upgrade to more powerfull parts witth out loking to need to buy another psu as I said buy smart buy once

as they say to each there own on what they feel is best .

like what I asked here on this article

''
why a 850w PSU ?? would it not be better to use a 550w seeing how there recommended here in the forums for a nice gaming rig ??

if asked here at toms that 850w is way too much overkill . ''

http://www.tomshardware.com/forum/id-3330589/test-graphics-cards.html

if its not needed then why do you use them higher watt psu on your test beds ??? [notice no reply to that ]

any way good luck on what you decide .

just to add ''Pcie 8pin are actually good for @10A per 18ga feeder ''

watts and amps all ways equal 150 watts is all ways 12.5 no matter what wire size you try to run it on just as smaller you go in the wire the less likely ti will hold up and get hot and melt in 2

n0ns3ns3 · Apr 15, 2017

SPK123, spikes are irrelevant

it is measured in a bit different way.
as already mentioned, for such a card, 650w of a good PSU would be the recommended minimum. I'd go for 750w unit like EVGA G3/G3/P2 or Corsair RM750x ... they come with 10 years warranty and will do the job for any single video card computer on the planet.

Karadjgne · Apr 15, 2017

18ga wire is good to carry upto @10A at 12vDC upto 12" in length. Any higher amperage you degrade the wire and it burns. Any longer and the resistance is too high amperage goes up, and it burns. 150w was set as the 'standard' for pcie 8pin because of the abundance of cheap psus that use 20ga instead of 18ga, which will not carry 10A, they burn out at 7A. So it was the 'safe' wattage, not an actual wattage.

There's 2 reasons why test benches use monster psus.
1. The monster psus are more commonly the higher quality, as in AXi 1500 etc, so this massive overpowering not only means absolutely no chance of underpower, but it'll also be clean/reliable power, no matter what gpu is used on the bench.
2. Sli/CF, r9 295x2, titans etc all come with high demands, and those monster psus are expensive. So they buy/get donated one big psu that gets reused constantly, along with the high end mobo's, cpus etc all in an effort to reduce any single component from application of any kind of bottleneck to the gpu performance.

Yes, paranoid. See it every day. Ppl with barely a pc running a 750ti and 750w psus, because the salesman convinced the buyer that he has a big gpu, so needs a big psu, and the $40 550w isn't enough, better be sure and get the $50 750w. Reality is that the buyers pc couldn't possibly out draw the $30 400w the salesman was desperately trying to hide.

I've got a Asus gtx970 at 123% user OC, with i7-3770K at 4.9GHz on a Evga G2 550w. And it doesn't blink. That's an 8pin pushing 225w gpu, over 200w cpu OC along with whatever the mobo/accessories is using, which can easily total 100w. And I'd need a 650w+ psu why? Just in case? Never happen. Those are maximum wattage that cannot ever be reached simultaneously. That would be like running a full cpu 100%load stress test, while direct burn a DVD between the optical's, while pushing a gpu 100% burn in, while listening to Pandora with the A/V running in the background. Never happens.

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