Suggested PSU for G1 Gaming 980 Ti SLI

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schneiderderek

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Apr 7, 2013
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I currently have 2 Gigabyte G1 Gaming 980 Ti cards on order and I am doing research to determine whether my PSU will also need an upgrade. I'm curious to know what thought or suggestions you guys have.

I am currently running a 750W SeaSonic 80+ Bronze power supply (link: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151107).

If I do need to upgrade my PSU i'm considering getting the EVGA SuperNOVA 1000W PS power supply (link: https://www.evga.com/Products/Product.aspx?pn=220-PS-1000-V1). Is this a good choice for my needs? I'll probably upgrade to X99 at some point in the future (6 months to a year at least), so I would like to make sure that I upgrade to a PSU that will work for that as well.

Here is a summary of the research i've done so far:
Guru3d is suggesting a minimum 900W PSU (source: http://www.guru3d.com/articles-pages/nvidia-geforce-gtx-980-ti-review,8.html)
RealHardTechX is suggesting a 850W PSU (source: http://www.realhardtechx.com/index_archivos/Page362.htm)

I've also been reading a number of other questions on tomshardware and i'm seeing suggestions that 750W may be able to run 980 Ti SLI and others suggest getting a power supply in the 850W-1000W range.
Sources:
http://www.tomshardware.com/answers/id-2669164/980-sli-psu-watts.html
http://www.tomshardware.com/answers/id-2673533/power-supply-gtx-980-sli.html
http://www.tomshardware.com/answers/id-2671078/980-sli-psu.html

Here are the other components in my build:
Intel i5-3570K @ 4.7 GHz
ASRock Extreme4 Z77
Crucial Ballistix Sport 16GB
SeaSonic M12II 750

Thanks in advanced for taking the time to read this and leave any feedback that you might have!

 
Solution
Noah Siano
Well, owning the 850W version of the EVGA supernova G2 series, I can say they are fantastic psu's. The one you linked is the platinum version, which doesn't come with those god-awful red pci-e cables, and it has a much better power rating so that's great.

But, in case you are wondering, if you have 2 G1 gaming 980 Ti's, they will have a TDP of over 500W together. If you include your cpu's 77W tdp and all the other things in your system, you're looking at a little under 650W of tdp. So you want your psu to perform best in that range. Psu's perform best in the 50-65% range usually, so a 1000W power supply performs best at around 500-650W. An 80 Plus Platinum power supply is about 92% efficient at that range, so basically, you aren't...
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Thanks for the suggestion N3rdR4ge, but isn't 1300W a little too much for what I need? It's my understanding that having more wattage is not necessarily better due to keeping the system power draw within a certain range to maximize efficiency.

Newegg is also running a similar special on the SuperNOVA 100W PS
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438035&cm_re=evga_super%5c-_-17-438-035-_-Product
10% off + $30 rebate would put me at about $155. However, realistically I probably won't even do the rebate card (sometimes they are too much of a pain to mess with).

 
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Well, owning the 850W version of the EVGA supernova G2 series, I can say they are fantastic psu's. The one you linked is the platinum version, which doesn't come with those god-awful red pci-e cables, and it has a much better power rating so that's great.

But, in case you are wondering, if you have 2 G1 gaming 980 Ti's, they will have a TDP of over 500W together. If you include your cpu's 77W tdp and all the other things in your system, you're looking at a little under 650W of tdp. So you want your psu to perform best in that range. Psu's perform best in the 50-65% range usually, so a 1000W power supply performs best at around 500-650W. An 80 Plus Platinum power supply is about 92% efficient at that range, so basically, you aren't getting any more power but your power supply is drawing less power from the wall to give you that power. It's a neat concept, here's a nice page you can read to learn all about it: http://www.corsair.com/en-us/blog/2012/august/80-plus-platinum-what-does-it-mean-and-what-is-the-benefit-to-me
So, you aren't gonna see a difference between say an 80 Plus Gold and Platinum psu and the size you get, but it will simply draw less power out of the wall if you use it at 50-65% of its max load.


TL;DR Buy a 1000W of your choice, and that EVGA 1000P is an excellent choice. Will save you money on your electricity bill in the long run.
 
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Solution


So what PSU did you get? :)
 
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I ended up getting the EVGA SuperNOVA 1050 GS PSU and it's been working great.
Amazon
Newegg
 
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