R9 290x Crossfire is worse than Single!

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Herkety

Herkety

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Jun 19, 2015
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In the Shadow of Mordor Benchmark I never go below 30fps and get an average of 60 with one GPU. But when I enable crossfireX I get a low of 20fps, a high of 200, and an average of 47fps.
I have a Gigabyte Z97SLI Mobo
i5 4690
8 GB G.skill Ram 1600mhz ram
850w TS XFX psu
2x XFX R9 290x 8GB
 
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photonboy

photonboy

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Jun 20, 2006
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Do you have the latest drivers for AMD?

I saw fixes online for Crossfire and this game, however other people said they weren't needed as AMD has supposedly added a Crossfire profile.

I don't have an AMD card but found the support site confusing. Is the Crossfire Profile package separate from the driver package?

Other:
Does Crossfire work for other games or benchmarks?
 
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Herkety

Herkety

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Jun 19, 2015
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4,520


I have the latest drivers but I'm downloading the Beta ones right now. I was playing TF2 and definitely noticed a boost when I turned off crossfireX. I also tried Skyrim(Heavily Modded) the FPS was also a little low. But I'll test some other games because my 290x's crushed Firestrike.
 
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Herkety

Herkety

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Jun 19, 2015
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I now have an average of 77 fps, better, but still seems pretty low
 
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Herkety

Herkety

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Jun 19, 2015
24
0
4,520
In Skyrim with Crossfire enabled just riding around on a horse can drop the fps to 20 and it never goes to 60. I get similar performance with a single card but it doesn't dip to 20. Keep in mind that my Skyrim is heavily modded. I also get fps drops in TF2 with 2 cards enabled.
 
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photonboy

photonboy

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Jun 20, 2006
21,567
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85,015
There may be a better forum for Crossfire support.

Since you get a good score on the Benchmark utility, it seems to be game specific.

Thus, you need to find out what SCALING you should expect to get per game.

SoM - I couldn't find any reliable info.
Skyrim - Mods make it difficult to know.
Firestrike - should match online results closely
Tomb Raider - 50%+ ?

(and avoid using Crossfire if possible. If hitting your FPS target already Crossfire may just give a worst experience though stutter)

*If you had TOMB RAIDER it would be interesting to see what the benchmark difference is between Crossfire on and off since it appears to get at least a 50% boost with a second card.
 
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