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Please help, I have a mobo that has a pcie 3.0 x16 and pcie 2.0 x4. I want to crossfire 270x, will the performance suffer?

Last response: in Graphics & Displays
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August 26, 2014 3:53:09 AM

Hi everyone, I have powercolor 270x PCS+ gpu and an ECS H87 mobo (http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail...). I have entered a certain competition and luckily won another Powercolor 270x PCS+ gpu. Im thinking of multi gpu setup, will the performance decrease that big since i only got a 2nd pcie slot with 4x and 2.0 revision?

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August 26, 2014 3:58:10 AM

Yes, performance WILL suffer.

Only Z97 / Z87 designated board and capable of running crossfire and SLI decently for gaming.
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August 26, 2014 4:00:11 AM

Yes. A 4x PCI-E 2.0 slot is not enough to get worthwhile performance returns from crossfiring R9 270Xs. I'd recommend an 8x PCI-E 2.0 or an 8x PCI-E 3.0 for the second card, to make it useful.

Even then, I typically don't recommend crossfire or SLI. Just way too many problems to be a good choice for most people.
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August 26, 2014 4:09:33 AM

awww, I'm having second thoughts in trying it out since i need to buy a new psu to crossfire, and knowing what you've both implied,I may need to buy a new mobo.

btw im gaming on 1080p, would that make any difference?
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August 26, 2014 5:13:16 AM

None. A PCIe x4 is not designed to run bandwidth intense graphics.
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August 26, 2014 5:23:58 AM

Ok thanks sir!
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