Is crossifreing good? And is this a good plan? *7970 related questions*

O Possum

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May 4, 2013
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I ask because a few times when I bring up amd cards on various tech forums some people will say how 'Crossfiring amd cards isn't a good idea'.

I do not understand why? Is there a problem when crossfireing amd cards?

The reason this pops up is because I picked a 7970 card for my first computer build (not built yet, still choosing parts/making sure with what I've chose) and in my build I include a 700 watt psu because I plan on crossfiring with another 7970 once games start to demand more than a single OCed 7970 can handle.

Would it be a better idea to get a smaller psu and wait and get a bigger one when I get the other card?

Or, would at the point I'd need another card would it be better to just get a whole new more modern card and not get another 7970?

I'm pretty new to this so please excuse my ignorance of this subject.
 

O Possum

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May 4, 2013
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Is 'microstutter' a big problem? Like, how noticeable is it?

And does your answer mean that I should just get a smaller psu and get a new different card when the 7970 can't handle games as well?

 
http://www.pcper.com/reviews/Graphics-Cards/Frame-Rating-Part-3-First-Results-New-GPU-Performance-Tools
http://www.pcper.com/reviews/Graphics-Cards/Frame-Rating-Dissected-Full-Details-Capture-based-Graphics-Performance-Tes-10
http://www.pcper.com/reviews/Graphics-Cards/Frame-Rating-GeForce-GTX-Titan-GeForce-GTX-690-Radeon-HD-7990-HD-7970-Cross-6
http://www.tomshardware.com/reviews/graphics-card-benchmarking-frame-rate,3466.html
http://techreport.com/review/24553/inside-the-second-with-nvidia-frame-capture-tools/11

Read those for more information on the problem.
 

EzioAs

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I personally would choose this (and a lot of budget conscious buyers, would too, I guess). I would wait for the next 2 gen and grab another high-end card though it depends on how much you are willing to sacrifice visual quality and frame rates
 


For the most part, the problem will be there in most games. The question is whether he will notice it. There are 2 primary reasons he wouldn't notice it:
1) He would have had plenty of performance with a single card anyways, making it not seem bad, as he wasn't relying on the 2nd card for the FPS needed for smooth game play. Though he may still have seen smoother performance from an SLI setup.
2) He uses a FPS cap of sorts, and it is low enough that it slows the GPU's down, which fixes the stuttering. V-sync has a similar effect, as does a CPU bottleneck.