PSU for GTX 1080 sli

[jonathan1107]

I'd like to know which psu's you would recommend for a gtx 1080 sli with a 24/7 overclocked system running on a custom water loop.

 

[Folterknecht]

750W from Seasonic or SuperFlower will do the job.

 

[jonathan1107]

750W from Seasonic or SuperFlower will do the job.

what about the psu certification?
is it worth it to get a gold certified or plat or titanium?

I admit I'm a bit confused regarding what it means in real life vs corp hype

 

[Ascalaphus]

For me personally I'd go with something around 1000w. If you are going to have the system overclocked 24/7. Corsair, EVGA, Seasonic, are all good brands in that wattage range.

 

[Jetster]

Just get this $155 after rebate

http://www.newegg.com/Product/Produ...m_re=seasonic_titanium-_-17-151-159-_-Product

or the 850

Best PSU ever

 

[Folterknecht]

what about the psu certification?
is it worth it to get a gold certified or plat or titanium?

I admit I'm a bit confused regarding what it means in real life vs corp hype

Gold is good enough

For me personally I'd go with something around 1000w. If you are going to have the system overclocked 24/7. Corsair, EVGA, Seasonic, are all good brands in that wattage range.

1000W

Go back to 1st and 2nd grade and learn some basic math.

edit:

added partpicker link

http://ca.pcpartpicker.com/products/power-supply/#m=14,71,441&sort=a9&W=725,880&e=6,5,4

 

[Ascalaphus]

Gold is good enough



1000W

Go back to 1st and 2nd grade and learn some basic math.

edit:

added partpicker link

http://ca.pcpartpicker.com/products/power-supply/#m=14,71,441&sort=a9&W=725,880&e=6,5,4

No reason to be a dick. I just said for me personally. OP asked for recommendations and i gave mine. If you don't agree fair enough. Maybe you can go back to school and learn some manners?

 

[quest_for_silence]

I'd like to know which psu's you would recommend for a gtx 1080 sli with a 24/7 overclocked system running on a custom water loop.

Among current least expensive options on PC Part Picker there is

http://ca.pcpartpicker.com/product/qYTrxr/evga-power-supply-220g20550y1

which is a fine pick, IMO.

 

[Jetster]

Current least expensive option on PC Part Picker is

http://pcpartpicker.com/product/qYTrxr/evga-power-supply-220g20550y1

Not much head room if any "gtx 1080 sli with a 24/7 overclocked"

 

[quest_for_silence]

Not much head room if any "gtx 1080 sli with a 24/7 overclocked"

Well, I don't think so: just for instance

http://www.kitguru.net/components/graphic-cards/zardon/msi-gtx-1080-gaming-x-8g-rgb-sli-review/29/

 

[Jetster]

Add the overclock to it

Didn't say it wouldn't work just no head room

 

[NdMk2o1o]

A 650w minimum would be my recommendation, and at least 80+ silver/gold. Evga make some great power supplies and can normally be found with offers and discounts. 550w would not cut it at all and that review looks off to me with sli only using 70w more than a single card... Yea OK.

 

[quest_for_silence]

Add the overclock to it

I already counted ocing into the equation.

Didn't say it wouldn't work just no head room

I don't think so: with reference to any oc'ed 115x + 1080 SLI rig, an high quality 550W like the EVGA G2 (Super Flower Leadex Gold) is plenty of headroom (the KitGuru example above with a 4.4GHz Core i7 6700K has about 200W of headroom).

 

[Folterknecht]

4690K max OC ~180W (incl. MB and RAM)
GTX 1080 max OC ~230W x 2

= 640W
add 100W reserve (though you ll never draw max power at the same time from all 3 compoents)
~ 750W PSU

 

[Jetster]

I already counted ocing into the equation.



I don't think so: with reference to any oc'ed 115x + 1080 SLI rig, an high quality 550W like the EVGA G2 (Super Flower Leadex Gold) is plenty of headroom (the KitGuru example above with a 4.4GHz Core i7 6700K has about 200W of headroom).

He has a i5 4690k @4.7Ghz (Watercooled) That's some serous OC

 

[P4-630]

I'd like to know which psu's you would recommend for a gtx 1080 sli with a 24/7 overclocked system running on a custom water loop.

Try http://www.bequiet.com/en/psucalculator

 

[64K]

Bronze/Silver/Gold/Platinum/Titanium is an efficiency rating.

https://en.wikipedia.org/wiki/80_Plus

The value received from the rating is subject to how much you will be running your rig and at what percent of the PSUs capacity and what you pay per kWh.

I would take either an https://www.amazon.com/dp/B00IKDETOW/?tag=tec06d-20 or a https://www.amazon.com/dp/B00IKDETOC/?tag=tec06d-20 for your SLI 1080 rig.

 

[quest_for_silence]

550w would not cut it at all and that review looks off to me with sli only using 70w more than a single card... Yea OK.

AFAIK the review is fine, and moreover coherent with other data around.
It's true that power consumption is strictly game-related, some games draw more, some draw less, but it may vary of a few tens of W.
So Tomb's is in the 400W (AC) ballpark, as well as Black Ops as seen on TechSpot

http://www.techspot.com/review/1195-palit-geforce-gtx-1080-sli/page4.html

OTOH on the same page you may see that Witcher 3 draw more, but again, data are coeherent (CPU on TechSpot is also a Core i7-6700K @ 4.50 GHz).

He has a i5 4690k @4.7Ghz (Watercooled) That's some serous OC

You mean like this? http://www.anandtech.com/show/8227/devils-canyon-review-intel-core-i7-4790k-and-i5-4690k/2
In case, we're talking of about 40W over stock. You may want to add 40-60W more for oc'ing the two cards, then we're in the 80-100W ballpark over stock.
Add such a figure over the 350-360W reported for Tomb's on the 4.4GHz Core i7 and you got ~410-440W DC for the 4690K (off a 550W PSU): that's fine, IMO.

 

[NdMk2o1o]

AFAIK the review is fine, and moreover coherent with other data around.
It's true that power consumption is strictly game-related, some games draw more, some draw less, but it may vary of a few tens of W.
So Tomb's is in the 400W (AC) ballpark, as well as Black Ops as seen on TechSpot

http://www.techspot.com/review/1195-palit-geforce-gtx-1080-sli/page4.html

OTOH on the same page you may see that Witcher 3 draw more, but again, data are coeherent (CPU on TechSpot is also a Core i7-6700K @ 4.50 GHz).



You mean like this? http://www.anandtech.com/show/8227/devils-canyon-review-intel-core-i7-4790k-and-i5-4690k/2
In case, we're talking of about 40W over stock. You may want to add 40-60W more for oc'ing the two cards, then we're in the 80-100W ballpark over stock.
Add such a figure over the 350-360W reported for Tomb's on the 4.4GHz Core i7 and you got ~410-440W DC for the 4690K (off a 550W PSU): that's fine, IMO.

You can keep repeating yourself as many times as you like but the simple fact is a 1080 can consume 180w of power and depending on game settings and resolution you're looking at 350-400w just for GPUs, add in 120w cpu and 50w for the rest of the system give or take and your 550w won't cope, this is fact.

 

[P4-630]

New members popping up everyday, most come with a question and others answering like they've been here for years LOL!

 

[jonathan1107]

Well I didn't expect to spark an argument here lol.

More details I should have mentioned.

I need fully modular
I will run a custom waterloop 24/7
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.

So yeah, I need a psu that will not bottleneck or throttle my Oc

But I'm not gonna go crazy with ln2 of phase cooling

 

[quest_for_silence]

You can keep repeating yourself as many times as you like but the simple fact is a 1080 can consume 180w of power and depending on game settings and resolution you're looking at 350-400w just for GPUs, add in 120w cpu and 50w for the rest of the system give or take and your 550w won't cope, this is fact.

LOL!

I reported to him actual figures, real numbers: and either if you just don't like them, or if you're not that good at math, well, I can't help, sorry!

Have a nice time!

 

[jboydgolfer]

Well I didn't expect to spark an argument here lol.

More details I should have mentioned.

I need fully modular
I will run a custom waterloop 24/7
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.

So yeah, I need a psu that will not bottleneck or throttle my Oc

But I'm not gonna go crazy with ln2 of phase cooling

Just get a minimum of a 650 W high quality branded power supply.

Personally I would recommend a 650 or 750 W EVGA G2. There's other good quality brands I personally like the EVGA models

They're fully modular gold rated the 650 W will cost you less than 100$ the 750 W runs for around $115 or so and their warranty is for 5 or 10 years I forget which .I've SLI'D 970s on the 650 W with an overclock CPU 4690 K just fine

That's all the information you'll need to purchase the proper power supply. And I'd lean towards the 750 W unit

 

[LFaWolf]

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. Don't undercut the PSU selection. Go at least 650w. Personally I go 750w.

2. Gold PSU is most efficient when @50% load (90% efficiency if I remember). If you intend to run your system 24x7, are you crunching folding or it just sits idle? If folding, then use a Kill-A-watt to find out what power draw and at least double that for the PSU.

 

[jboydgolfer]

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. Don't undercut the PSU selection. Go at least 650w. Personally I go 750w.

2. Gold PSU is most efficient when @50% load (90% efficiency if I remember). If you intend to run your system 24x7, are you crunching folding or it just sits idle? If folding, then use a Kill-A-watt to find out what power draw and at least double that for the PSU.

I may have interpreted wrong but what I believe is meant generally when someone says a "24/7 overclock" is that they mean it will always be overclocked ,not that the PC is going to run 24 seven.

But I could be wrong and you could be right, I don't know exactly what the OP intends .that's just what my experience has been with that particular phrase