Jump to content

PSU for SLI GTX 1080ti's

SmartenUp
By SmartenUp
in Power Supplies
 Share
Posted

Two Identical Machines - Both need a new PSU

 

CPU: 6700K @ 4.3GHz

GPU: EVGA GTX 1080Ti FTW3 GAMING (2 in SLI)

SSD: 4 x 2TB 

 

I used the calculator and I only got 800 Watt recommendation. That seems low, no?

Can anyone recommend 2 or 3 PSU's too choose from?

 

Purchaser Location: Canada, BC

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

800W is too high. Realistically, 650-750W should be enough. Overclocked, 750W.

The RMx, Prime Titanium, P2, T2 and HX are some good units

:)

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author

Okay Thanks!

 

For the time being, I do have the crap Tier 7 Thermaltake - TR2 (600 Watt)

 

If I only plug in a single 1080ti, this would work right?

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
2 minutes ago, SmartenUp said:

Okay Thanks!

 

For the time being, I do have the crap Tier 7 Thermaltake - TR2 (600 Watt)

 

If I only plug in a single 1080ti, this would work right?

If it kills as 1080 Ti, you have another one, so sure. If you want to be sure you can actually get to use both at the same time, don't

:)

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author
1 minute ago, seon123 said:

If it kills as 1080 Ti, you have another one, so sure. If you want to be sure you can actually get to use both at the same time, don't

Haha, the idea is to keep them all alive :)

 

I'll let them sit in their boxes until the PSU ships.

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
1 minute ago, SmartenUp said:

Purchased two of these: EVGA SuperNPVA 1000 G3, 80 Plus Gold 1000W

 

https://www.amazon.ca/gp/product/B01LZ3SFB3/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

 

Case closed. Thank You!

Quite a loud PSU, though. 1700RPM under a 500W load. Why did you get such high wattage PSUs? 

They will be really good electrically, though, and should last for a long while. They're good PSUs, that's not the issue. It just annoys me a bit that the G3 is a bit loud. 40dBA isn't terrible, though. 

https://www.cybenetics.com/index.php?option=database&manfID=36&volts=1

:)

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author
7 minutes ago, seon123 said:

Quite a loud PSU, though. 1700RPM under a 500W load. Why did you get such high wattage PSUs? 

They will be really good electrically, though, and should last for a long while. They're good PSUs, that's not the issue. It just annoys me a bit that the G3 is a bit loud. 40dBA isn't terrible, though. 

https://www.cybenetics.com/index.php?option=database&manfID=36&volts=1

I figured the 850 variant is just as loud.

I'll be able to future proof my PSU's.

I'm also able to get the 1000 watt for just 12$ more each - as the 850 watt, off amazon right now.

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author
17 minutes ago, seon123 said:

Quite a loud PSU, though. 1700RPM under a 500W load. Why did you get such high wattage PSUs? 

They will be really good electrically, though, and should last for a long while. They're good PSUs, that's not the issue. It just annoys me a bit that the G3 is a bit loud. 40dBA isn't terrible, though. 

https://www.cybenetics.com/index.php?option=database&manfID=36&volts=1

Now you got my all worried that they will be too loud. Didn't even think about that.

 

Okay back to the drawing board.

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
Just now, SmartenUp said:

Now you got my all worried that they will be too loud. Didn't even think about that.

 

Okay back to the drawing board.

Cybenetics shows about 40dBA at a realistic load. Should be fine, probably. 

That was the reason I didn't recommend the G3 :P

:)

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author
8 minutes ago, seon123 said:

Cybenetics shows about 40dBA at a realistic load. Should be fine, probably. 

That was the reason I didn't recommend the G3 :P

Okay, so I checked your recommendations and landed on these:

RM850x

https://www.amazon.ca/Corsair-RM850x-Modular-Certified-Warranty/dp/B015YEI8JG/ref=sr_1_3?ie=UTF8&qid=1515786349&sr=8-3&keywords=rmx+psu

 

HX850i

https://www.amazon.ca/Corsair-HX850i-Performance-Supply-CP-9020073-NA/dp/B00M2UIXX2/ref=sr_1_1?s=electronics&ie=UTF8&qid=1515786518&sr=1-1&keywords=hx850i

 

HX1000i

https://www.amazon.ca/Corsair-HX1000i-Performance-Supply-CP-9020074-NA/dp/B00M2UINT6/ref=sr_1_1?s=electronics&ie=UTF8&qid=1515785851&sr=1-1&keywords=HX1000i

 

As far as I can tell, the HX is better than the RM since it's plat vs gold rating... and for only 25$ more, it would be stupid not to get the 1000 over the 850... right?

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
1 minute ago, SmartenUp said:

Okay, so I checked your recommendations and landed on these:

RM850x

https://www.amazon.ca/Corsair-RM850x-Modular-Certified-Warranty/dp/B015YEI8JG/ref=sr_1_3?ie=UTF8&qid=1515786349&sr=8-3&keywords=rmx+psu

 

HX850i

https://www.amazon.ca/Corsair-HX850i-Performance-Supply-CP-9020073-NA/dp/B00M2UIXX2/ref=sr_1_1?s=electronics&ie=UTF8&qid=1515786518&sr=1-1&keywords=hx850i

 

HX1000i

https://www.amazon.ca/Corsair-HX1000i-Performance-Supply-CP-9020074-NA/dp/B00M2UINT6/ref=sr_1_1?s=electronics&ie=UTF8&qid=1515785851&sr=1-1&keywords=HX1000i

 

As far as I can tell, the HX is better than the RM since it's plat vs gold rating... and for only 25$ more, it would be stupid not to get the 1000 over the 850... right?

The RMx is already plenty good, and should be roughly as quiet as the HX/HXi. There's not really much reason to get the HX. If the RMi is available for ~$5-10 more than the RMx, then that's a good option too. Allows for monitoring of the PSU, and I think allows for control of the fan. 

Anything under 30dBA under load should realistically be as quiet as you need. Most higher end PSUs have a 0RPM mode for when you're idling. 

Cybenetics' testing, if you want numbers. 

:)

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
4 hours ago, SmartenUp said:

Two Identical Machines - Both need a new PSU

 

CPU: 6700K @ 4.3GHz

GPU: EVGA GTX 1080Ti FTW3 GAMING (2 in SLI)

SSD: 4 x 2TB 

 

I used the calculator and I only got 800 Watt recommendation. That seems low, no?

Can anyone recommend 2 or 3 PSU's too choose from?

 

Purchaser Location: Canada, BC

Two 1080Tis with hefty OC will consume about 350W apiece, or 700W total. With a 6700K at basically stock voltage (why 4.3 GHz exactly?) you're probably at about 800W under load, just a bit under perhaps.

 

I've said before that I'd personally get no less than an 850W for two 1080Tis in SLI and I'd say that's true here too. If you had an 1800X or 8700K or some other more power hungry CPU I'd recommend a 1000W.

|PSU Tier List /80 Plus Efficiency| PSU stuff if you need it. 

My system: PCPartPicker || For Corsair support tag @Corsair Josephor @Corsair Nick || My 5MT Legacy GT Wagon ||

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

https://www.newegg.com/Product/Product.aspx?Item=9SIA4H81E87666&cm_re=ocz-_-17-341-044-_-Product

 

Been running the 1000w variant for almost 5 years now. No such thing as too much, unless its inefficient.

 

Id only get higher tier corsair as I don't like their lower and mid range models. Evga stuff if always nice looking and good quality. 

 

Running 2 1080ti's on 750watt psu's but not for gaming so they aren't under much load.

 

Main RIg Corsair Air 540, I7 9900k, ASUS ROG Maximus XI Hero, G.Skill Ripjaws 3600 32GB, 3090FE, EVGA 1000G5, Acer Nitro XZ3 2560 x 1440@240hz 

 

Spare RIg Lian Li O11 AIR MINI, I7 4790K, Asus Maximus VI Extreme, G.Skill Ares 2400 32Gb, EVGA 1080ti, 1080sc 1070sc & 1060 SSC, EVGA 850GA, Acer KG251Q 1920x1080@240hz

 

Link to comment
Share on other sites
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing Power Supplies

×