PSU for GTX 1080 sli

[LFaWolf]

Not sure, because OP said "Unless there is some benefit to turning the loop off. I've got this idea in my head that somehow 24/7 is better for water. I don't like the idea of a coolant or water not moving for long period of times. " Sounds like running the system 24/7 to me, but OP needs to clarify I guess.

 

[jboydgolfer]

Not sure, because OP said "Unless there is some benefit to turning the loop off. I've got this idea in my head that somehow 24/7 is better for water. I don't like the idea of a coolant or water not moving for long period of times. " Sounds like running the system 24/7 to me, but OP needs to clarify I guess.

as i said, he might not mean what i posted, thats just what the term genrally means, as im sure you know.....but it nevers pays to assume in a situation such as this. I agree with you.

 

[Jetster]

He's running it 24/7 @ 4.7 Ether way he needs a sturdy PSU

 

[Folterknecht]

It gets worse and worse here. First 1000W nonsense and now we have a clown who claims 550W will do the job.

That's LTT YT comment niveau here.

 

[quest_for_silence]

1. 550w is not enough. PSU problem is not an easy problem to diagnose. Say when you are gaming, your SLI are boosting, and you have a background process spiking the CPU usage to 100%, then poof, you get a BSOD because the PSU is not supplying enough power to the system, then you wonder - is one of my GPUs is faulty? My OC is unstable now? My motherboard? Memory? What is it? Then you dial down the OC, go 1 stick of memory, etc. Often times people tear down the entire system only to find the PSU is faulty.

LOL! I wonder which PSUs those people got!

Broadly speaking, spreading uncertainty doesn't help you or anyone else. If you have a power meter (like the quoted kill-a-watt) just read the figures, they will be not even remotely close to what lots of people pretend they are.

now we have a clown

An educated clown and a rude bully, I'd say! ^^^^^^^^^^^^^^^

 

[LFaWolf]

LOL! I wonder which PSUs those people got!

Broadly speaking, spreading uncertainty doesn't help you or anyone else. If you have a power meter (like the quoted kill-a-watt) just read the figures, they will be not even remotely close to what lots of people pretend they are.

I don't spread uncertainty. Go to this site. If you plug in the system specs, you will see it says 700w or more. Granted the number is inflated because it is assuming 100% load on all components, which is unrealistic at most times, but you cannot deny the fact that the total numbers added together exceed 550w.
http://outervision.com/power-supply-calculator

Also, check here - 273w for a single GPU. Do the math.
http://www.tomshardware.com/reviews/nvidia-geforce-gtx-1080-pascal,4572-10.html

 

[Nicholas Peyton]

Remember that every 1080 card is different. The max power draw of a FE (fully overclocked) is 216w. The max power of a Classified is 320w (fully overclocked). The max power of a 'HOF Limited Edition' I think, is 375w. (fully overclocked) Even though; they are all 1080's

Most games will never draw more than 275w from each GPU. You can find out what your cards limits are on the techpowerup GPU BIOS database

 

[jonathan1107]

This thread is the most entertaining in a while. Feels like the YouTube comment section.

Some more clarifications:
I do not intend to leave the pc on its highest over clock 24/7. But I do intend to let the water loop run 24/7 because of the reasons I mentioned earlier.

Feel free to educate me about those fears being either justified or not lol

Thanks again for the input. I'm hesitating between a good 850w psu. Because my next build involves the green color a lot. Il considering the thermaltake grand rgb 850w gold rated at 169$ CAD. NOT TO BE confused with the thermaltake dps grand rgb.

Also considering seasonic titanium psu at 300$ cad. Feels a bit overkill for my needs though.

I could go in between with a platinum evga at 225$

 

[quest_for_silence]

I don't spread uncertainty. Go to this site. If you plug in the system specs, you will see it says 700w or more. Granted the number is inflated because it is assuming 100% load on all components, which is unrealistic at most times, but you cannot deny the fact that the total numbers added together exceed 550w.
http://outervision.com/power-supply-calculator

With reference to accuracy that Outervision tool is close to garbage: moreover, that tool output is not comparable to a power meter one, as the first is a mere guess, the other one a direct measure.

BTW, I don't pretend to teach the truth to anyone, but to tell some actual facts (and not something I pretend is a fact): that's why I gave examples of.
If you are sizing a PSU over actual figures, then look around for figures, as there are some all over the web. In case you don't like the one I pointed out, just look for some different ones, in order to see if they sound more convincing to both you and me.
OTOH if you are more comfortable to size the needed PSU capacity upon personal habits and beliefs, do what you think best: at worst I may think you will waste some money, but it is not mine, so...

Also, check here - 273w for a single GPU. Do the math.
http://www.tomshardware.com/reviews/nvidia-geforce-gtx-1080-pascal,4572-10.html

That's one major issue, likely: usually things don't work that way.

You can't add each power figure like they were LEGO bricks: that's why I already pointed out two actual measures (KitGuru and TechSpot), not educated guessworks, which are inconsistent with any assessment based upon any too simplistic addition and subtraction, at least IF the actual gaming power draw IS the requirement.

OTOH IF you wanna benchmark something, or partecipate to overclock competitions, or eventually perform a tough and thorough stress test, or anything similar and not just gaming, your mileage may vary with reference to the expected power draw (i.e. the two quoted examples don't apply).

Have a nice time!

 

[LFaWolf]

That's one major issue, likely: usually things don't work that way.

You can't add each power figure like they were LEGO bricks: that's why I already pointed out two actual measures (KitGuru and TechSpot), not educated guessworks, which are inconsistent with any assessment based upon any too simplistic addition and subtraction, at least IF the actual gaming power draw IS the requirement.

OTOH IF you wanna benchmark something, or partecipate to overclock competitions, or eventually perform a tough and thorough stress test, or anything similar and not just gaming, your mileage may vary with reference to the expected power draw (i.e. the two quoted examples don't apply).

Have a nice time!

Of course it does not add up like Lego, but to say that with an additional card the power draw only increases by 80w is also not true. There must be a bottleneck in the quoted benchmark from Kitguru, or that Tomb Raider game is not fully utilizing the 2nd GPU. I do not believe with a 2nd card the power draw only increases by a mere 25%.

 

[sneekypeet]

Thread cleansed of all off topic banter. Only public warning! Post pertaining to the topic or move along.

 

[DOM]

I'll get a 1k + psu why would you wanna run a psu near its max ratting? If you can run 1080 slightly I'm sure you can spend some $ on a beefy psu that my opinion

 

[64K]

Thread cleansed of all off topic banter. Only public warning! Post pertaining to the topic or move along.

A bit heavy handed Mr Peet or are we permitted to disagree with comical horse shit postings in a comical way anymore on TPU? Just asking sir.

 

[jboydgolfer]

A bit heavy handed Mr Peet or are we permitted to disagree with comical horse shit postings in a comical way anymore on TPU? Just asking sir.

IKR?
getting a little "paper please" around here.

also, @jonathan1107 , i recommend Seasonic PSU's as well. i forgot to add that part.

 

[eidairaman1]

He's running it 24/7 @ 4.7 Ether way he needs a sturdy PSU

1050W X Series by Seasonic (XM2)

Im using the 1250W model

 

[sneekypeet]

A bit heavy handed Mr Peet or are we permitted to disagree with comical horse shit postings in a comical way anymore on TPU? Just asking sir.

Would you rather I just hand out vacations? As to the second part, sure you can disagree as long as it is not a personal attack or a lame image which does nothing to help the OP.

 

[64K]

Would you rather I just hand out vacations? As to the second part, sure you can disagree as long as it is not a personal attack or a lame image which does nothing to help the OP.

Well, I'm no stranger to bans from 1983 online and up for speaking my opinion. I would rather be banned than to be told to shut up and sit down in a corner quietly when someone is spewing horse shit. So I guess ban me then. Thank You.

 

[jonathan1107]

Alright guys. One last question. As for psu wattage. Would a 850w be more than enough for GTX 1080 sli plus cpu OC plus custom water loop and fans?

Or would you say I'd be on the safe side with 1000w?

If it's any help, I intend to eventually upgrade to a ti card. The most gpu horsepower I intend to harness (gotta love the choice of words here hehe) would be 2x ti cards.

I'll never do 2x titan cards. They do say to never say never. But I'll still say it regarding titan cards lol

 

[eidairaman1]

Alright guys. One last question. As for psu wattage. Would a 850w be more than enough for GTX 1080 sli plus cpu OC plus custom water loop and fans?

Or would you say I'd be on the safe side with 1000w?

If it's any help, I intend to eventually upgrade to a ti card. The most gpu horsepower I intend to harness (gotta love the choice of words here hehe) would be 2x ti cards.

I'll never do 2x titan cards. They do say to never say never. But I'll still say it regarding titan cards lol

It could, but when OC with a water loop id say get as much psu as your budget allows. Seasonic had a sale on the 1050W recently.

 

[BiggieShady]

Go for 1 kW to keep the automatic PSU fan off or at low speed

 

[MxPhenom 216]

An 850w like the EVGA P2 850 is plenty for 1080 sli. 1080s dont consume that much power, though all the commwnts in this thread seem to forget that fact. Even Guru3d recommended a 750w for 1080 sli. Id be surprised to see his rig pull more than 600w from the wall.

 

[EarthDog]

Alright guys. One last question. As for psu wattage. Would a 850w be more than enough for GTX 1080 sli plus cpu OC plus custom water loop and fans?

Or would you say I'd be on the safe side with 1000w?

If it's any help, I intend to eventually upgrade to a ti card. The most gpu horsepower I intend to harness (gotta love the choice of words here hehe) would be 2x ti cards.

I'll never do 2x titan cards. They do say to never say never. But I'll still say it regarding titan cards lol

Dude, you'd be fine with 650W... I wouldn't go a penny over 750W honestly. Fully overclocked you won't break 550W custom water, fans, etc...

A 180W card doesn't turn into 320W because it's a different model. Nicolas is mistaking what the power limit is versus how much power its actually using with the stock bios and ambient cooling. Let's use our heads a little bit. Saying you dont bios mod, those cards won't break 225W maxed out using factor power limit. Your cpu isnt using 125W maxed out...give 75W for chipset, water, fans, drives, etc.... that's 600W... thats also if you are running ALL parts full out. You'd be hard pressed to see 550W gaming.

Since you want a Ti in the future, get evga 750 g3/p3. I don't recommend going platinum..not worth the premium.

Edit: no reason to run your loop 24/7... seriously. Shut it all down... Matlin your loop like everyone else (should) and break it down, at least annually. Use the right tubing that doesn't leech plasticizers, don't use dyed liquids most of all. You want color, get colored tubing.

 

[jonathan1107]

I'm citing a user from the hardware canucks forum here:

"Ya, that was me. I have DDC PWM, 4 1850rpm GTs, 5930k at 4.5ghz and SLI 1080 founders under water OCed to 2100mhz and peaking around 810w full load. I would say 1000w is plenty with how lean Pascal is on power. 1200w if you want tons of slack available. I have a Corsair ax1200 that have had for years, and never a hiccup. Like the Evga lineup too these days."

I do intend to do maintenance on the water loop as suggested by earthdog every year at least, maybe even every 6 months. I do intend to get color in there... All the colored tubings I've found are transparent and don't seem to give me the "Opaque" non transparent color I want so I'll make do. I'll just have to flush my radiators prior to install and keep an eye on PH levels apparantly.

 

[EarthDog]

810W....riiiight. is he bios and voltage modded? Howd he hit 810W? Furmark + p95? Otherwise, that's really impossible considering power limits on these cards....you understand how it works, right?

Also, I'd bet 810W was from the wall. Assuming a 90% efficient psu, that load is actually ~730W.

Let me put it another way. With a 5930K at 4.7ghz, a r9 295x2 overclocked to its limit including adding voltage and it was watercooled (500w card stock, note), I pulled 850W from the wall on a 750W psu. These two cards are 180W or 225 max without mods... just do the math and use your head.

 

[jonathan1107]

810W....riiiight. is he bios and voltage modded? Howd he hit 810W? Furmark + p95? Otherwise, that's really impossible considering power limits on these cards....you understand how it works, right?

Also, I'd bet 810W was from the wall. Assuming a 90% efficient psu, that load is actually ~730W.

Let me put it another way. With a 5930K at 4.7ghz, a r9 295x2 overclocked to its limit including adding voltage and it was watercooled (500w card stock, note), I pulled 850W from the wall on a 750W psu. These two cards are 180W or 225 max with mods... just do the math and use your head.

Well, I don't mind spending the little extra $$$. Everybody on this thread is telling me to get as low as 550w or as high as 1200w, figured I'd take something a little bit above my actual "need" just in case some new techs come out requiring more power or if SLI becomes hot again at some point. better safe than sorry