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Looking for a x16/x16 Crossfire Motherboard for i5

post #1 of 21
Thread Starter 
Hey guys, i'm in the process of putting together a new build, now i know x8/x8 crossfire setups don't make much difference from their x16/x16 counterparts, but i've heard there can be upto a 10% performance hit on eyefinity setups.

Would really appreciate any suggestions on a good x16/x16 motherboard which would overclock well with an i5, thanks.
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post #2 of 21
i5 what?? u talking sandybridge or clarkdayle/lynfield? In other words LGA1155 or LGA1156??
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post #3 of 21
is this a 1156 i5 or a Sandy Bridge 1155?

The 1156 doesn't have 16x/16x support frown.gif
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post #4 of 21
The primary PCIe controller on ALL i5 systems is integrated in the CPU. These are support only x8/x8 or x16. To get a x16/x16 mobo, it would need to use a 3rd party controller like the NF200 or Lucid Hydra. The additional latency of these can cause a performance hit as well.
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Once again...
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post #5 of 21
Quote:
Originally Posted by Offline;13724225 
Hey guys, i'm in the process of putting together a new build, now i know x8/x8 crossfire setups don't make much difference from their x16/x16 counterparts, but i've heard there can be upto a 10% performance hit on eyefinity setups.

Would really appreciate any suggestions on a good x16/x16 motherboard which would overclock well with an i5, thanks.

depending as for 1155 boards, the only 16x16x board that come to mind are the ud7 possible the maximus iv extreme, but really what are you using for crossfire? 8x8x will not affect 4850's at all, hell it doesn't affect 5850's in my experience.
post #6 of 21
Quote:
Originally Posted by Mr OCN;13724253 
is this a 1156 i5 or a Sandy Bridge 1155?

The 1156 doesn't have 16x/16x support frown.gif

Yes they do..they need a Lucid Hydra or NF200 3rd party chipset. Like the...

EVGA Classified 200
ASUS Maximus III Xtreme
MSI Big Bang Fuzion

only 3 that come to mind right now
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post #7 of 21
Quote:
Originally Posted by mr. biggums;13724279 
depending as for 1155 boards, the only 16x16x board that come to mind are the ud7 possible the maximus iv extreme, but really what are you using for crossfire? 8x8x will not affect 4850's at all, hell it doesn't affect 5850's in my experience.

because you have an i7 970 which is an x58...x58 chipsets have x16/x16 lanes already
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post #8 of 21
Quote:
Originally Posted by tx-jose;13724302 
because you have an i7 970 which is an x58...x58 chipsets have x16/x16 lanes already

I've used crossfire 5850's in more then this setup, used on my old 1156 setup and i will use it on my 1155 benching rig as well, if there was a difference in performance it was only a frame because i never noticed one.
post #9 of 21
Quote:
Originally Posted by mr. biggums;13724319 
I've used crossfire 5850's in more then this setup, used on my old 1156 setup and i will use it on my 1155 benching rig as well, if there was a difference in performance it was only a frame because i never noticed one.

I was baising it off of you sig rigg...sorry biggrin.gif
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post #10 of 21
Thread Starter 
Quote:
Originally Posted by tx-jose;13724245 
i5 what?? u talking sandybridge or clarkdayle/lynfield? In other words LGA1155 or LGA1156??

Ah sorry, should have made myself more clear, this will be an i5 2500 Sandybridge on 1155.

Thanks for all the answers guys, at the moment i have a 6970, will be buying another one to crossfire it on the new system, seems like i might just be going for an x68 motherboard with x8 lanes in dual mode.
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