is a Corsair RM1000 enough for 3 way sli on ASUS gtx 980 ti Strix?

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zay475

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Hi, my question is as the title suggests? I can't figure out whether i may need more power or not? I'm such a noob at this stuff, i'm slowly learning. Emphasis on the slowly lol

Any advice would be greatly appreciated.
 
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toyftw


Hi - Yes, the 1200 will cover it nicely. The 980ti's don't actually draw 375w each, much closer to 300w.
302 max on one model I checked, reference 980 ti's are 250w.

Actually 263w max on your card;

https://www.techpowerup.com/reviews/ASUS/GTX_980_Ti_STRIX_Gaming/28.html

388w max on whole sys
http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/70053-asus-gtx-980-ti-strix-oc-review-4.html
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Karsten75

Karsten75

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Each card requires 375W: https://www.asus.com/us/Graphics-Cards/STRIXGTX980TIDC3OC6GD5GAMING/specifications/

That means you need 112W solely to support the cards. Then you'd need between 350-650W (depending on processor) for the rest of your components at stock. Add a lot more if you're planning to overclock. If you have one of those Insane AMD high-end processors you may need even more.

That's why they have 1600W PSUs.
 
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zay475

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Here are my specs atm

Corsair Graphite Series 780T - white
Intel Core i7 5820K Haswell-E 6-Cored 3.60GHz Processor
Corsair Hydro Series H100i GTX Extreme Performance Liquid CPU Cooler
Asus X99-A/USB3.1 DDR4 Motherboard
NVIDIA GeForce GTX 980 ti SLI MSI
16GB DDR4 2133Mhz Memory
1GB Samsung SM951 M.2 PCIe Solid State Drive (Note: Windows 7 is NOT supported)
2000GB Seagate HDD
24x DVD-RW Drive
Corsair RM 1000W Power Supply
Microsoft Windows 10 Home 64 bit.

It originally had a gtx 980 4gb, when i bought it last year and was overclocked to 4.2Ghz

But i replaced the cards and PSU

Do you think a platinum 1200 would cover 3 way SLI for 980 ti STRIX

 
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zay475

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Yeah, i can do math, how ever i've read that when sli scaling the full wattage of all 3 cards is rarely used, i appreciate the reply, but i dont see why you're being rude, i'm only asking the community in case anyone else is in a similar situation.
 
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Karsten75

Karsten75

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I'm not rude, but yo're not thinking clearly. "rarely used" still means it may be used and you should provide the power for those rare circumstances. . Or do you want your rig to fail?

At the very least you're going to need 6 x 8-pin connectors to connect all the cards. plus the CPU 8-pin. On my ASRock X99 mobo there was an additional on-mobo power header for multi-SLI configurations. Don't see that on the Asus mobo though.

In conclusion, you have to over-provision power, not rely on "rarely used" and hoping you can scrape by.
 
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toyftw

toyftw

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Jul 29, 2012
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Hi - Yes, the 1200 will cover it nicely. The 980ti's don't actually draw 375w each, much closer to 300w.
302 max on one model I checked, reference 980 ti's are 250w.

Actually 263w max on your card;

https://www.techpowerup.com/reviews/ASUS/GTX_980_Ti_STRIX_Gaming/28.html

388w max on whole sys
http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/70053-asus-gtx-980-ti-strix-oc-review-4.html
 
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