Is My PSU Enough For "Fury X" 2 Cards Crossfire?

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davidkd

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Oct 17, 2017
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I have "SeaSonic 850W 80+ Bronze M12II" PSU.
Is it enough to run 2 Fury X's in crossfire, or i need to upgrade?

thank you very much for the answers.

My RIG::
i7 - 4790K
32 GB corsair Vengeance
2TB seagate Firecuda
512 GB 950 pro sumsung NVME
Asus radeon Fury X 4GB HBM
SeaSonic 850W 80+ Bronze M12II
 
Solution
Karadjgne
CF at best gives about 60% boost to dx11 games. For about 10% of all the games. The rest fall in generally towards @10-30% boost. The last 10% are so badly optimized for CF you'll actually get better performance by turning the CF OFF temporarily when you play. DX12 is out with win10 but has so little actual benefits coded into the game, most are better played under dx11 still. So there's little benefit for many newer games for CF overall.
CF Fury X will run on an 850w just fine, but some OC models push the boundaries and can spike very close to that with upwards of 600w spikes, so it's recommended that you use a 1000w psu so as to not shortchange any cpu OC.

With what little gains overall are to be had, you'll have to ask is it worth...
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jaslion

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Dec 17, 2012
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Yes it can do fury x crossfire. However I advise against it since crossfire support is terrible and it's quite a bit worse than sli support in games which is also almost nonexistent anymore.

If you are lucky you might get 30% performance increase in some of the new games that do support multi gpu but more often than not you get almost no improvement or even worse performance.

If your current fury x doesn't suit your needs sell it and get a new gtx 1080 ti since single card is always the better idea over multiple.
 
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Karadjgne

Karadjgne

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Dec 26, 2012
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R9 Fury X CF recommended psu is 1000w. Simply based on the draw spikes those cards are capable of.
That said, it's a Fury X, so you'd need plenty of space and seriously good airflow in the case, the extra card, better psu. And really get nothing much out of the money spent. With bit coin mining still prevalent, I'd sell the card while it's still getting premium prices and look into a single card that'll not only outperform that CF, but doesn't require extraordinary measures.
 
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davidkd

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Oct 17, 2017
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I have an opportunity to buy cheap secondly Fury X card. This is why i thought about doing it.
In many videos on youtube i sew guys who got significantly increase in performance. Are you sure about it?
And i want it for games of curse.
 
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Karadjgne

Karadjgne

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Dec 26, 2012
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CF at best gives about 60% boost to dx11 games. For about 10% of all the games. The rest fall in generally towards @10-30% boost. The last 10% are so badly optimized for CF you'll actually get better performance by turning the CF OFF temporarily when you play. DX12 is out with win10 but has so little actual benefits coded into the game, most are better played under dx11 still. So there's little benefit for many newer games for CF overall.
CF Fury X will run on an 850w just fine, but some OC models push the boundaries and can spike very close to that with upwards of 600w spikes, so it's recommended that you use a 1000w psu so as to not shortchange any cpu OC.

With what little gains overall are to be had, you'll have to ask is it worth it, just to play the 1 or 2 games you saw the videos on, vrs the rest of the games you usually play and do you really need that extra fps. With minimums above the refresh of your monitor(s) none of the max fps does anything.

Although it might make financial sense if the card works, and it's a really good deal, you could probably turn around and sell them both at profit enough to purchase a single card that gets better overall performance.

If you look at the new Ryzen B350 mobos, 95% have only a single x16 pcie, even amd knows CF is on its way out.
 
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