Still a little confused about PCIE options

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Solution
manofchalk
That motherboard has two physical 16x slots, though electrically the 2nd one is only 4x.
As long as a slot is 8x or better (PCIe2 or 3 doesn't matter), it wont bottleneck a card slotted into it, running a card in the 2nd slot will drag down the performance of the array. My suggestion is you jut buy an outright stronger card instead of crossfiring two weaker cards.
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manofchalk

manofchalk

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May 11, 2012
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Generally people need help with problems, and the way people help with problems is solutions. Solutions are generated by people who have information about said problems and knowledge of the subject. We here at Tom's are pretty good at knowing our stuff, so the lack of solutions must mean some part of the equation is missing, and it definitely isnt our knowledge.

Tell us what your problem is and maybe we can actually help you solve it
 
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napox

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Dec 31, 2013
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Sorry for some reason my actual question did not post. If you have an AMD FX board that accepts two PCI E 2.0 X 16 cards like this one ASUS M5A97 R2.0 AM3+ AMD 970 http://www.newegg.com/Product/Product.aspx?Item=N82E16813131873 will it utilize most of the power from running two PCI E 3.0 X 16 cards like this SAPPHIRE 100358L Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 CrossFireX http://www.newegg.com/Product/Product.aspx?Item=N82E16814202011 or is this a lot more than the hardware can handle and subsequently go to waste?
 
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manofchalk

manofchalk

Glorious
May 11, 2012
12,914
3
48,960
That motherboard has two physical 16x slots, though electrically the 2nd one is only 4x.
As long as a slot is 8x or better (PCIe2 or 3 doesn't matter), it wont bottleneck a card slotted into it, running a card in the 2nd slot will drag down the performance of the array. My suggestion is you jut buy an outright stronger card instead of crossfiring two weaker cards.
 
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Solution
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napox

Honorable
Dec 31, 2013
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Thanks! That is what I was afraid of, they make it sound like they both run at 16x. Is that the case with all AMD mother boards i.e. the second slot always runs at 4x or 8x?
 
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