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1  Other / Beginners & Help / Re: quad 7970 mining rig - mobo on: June 13, 2013, 08:39:53 PM
Quote from: nottm28 on June 11, 2013, 11:18:53 PM
I have the same mobo - but you will need pci entenders - there's no way you can fit 4 double slot gpu's in this mobo without extenders.

I have no problem with the risers, as I understand it, the powered ones are from 1x -> 16x PCI-e so I plan to get four of those (one for each card)

That's not my question but it looks like he answered it in a comment anyway:

Quote
I just want to make sure if the 1x to 16x Powered Riser Cables dont diminish the hashing rate of the cards connected to them? I suppose they dont but just want to make sure

Quote
No, the 1x slots have no effect on hash rates. The full 16x bandwidth is needed if you are using the card for video games.
Read more: http://www.coinminingrigs.com/quad-7970-mining-rig/#ixzz2W8BEoe25

Thanks
2  Other / Beginners & Help / quad 7970 mining rig - mobo on: June 11, 2013, 11:13:53 PM
http://www.coinminingrigs.com/quad-7970-mining-rig/

So I'm planning to put together this rig with four 7970s

But one thing bugs me about this build, maybe I'm missing something here, but the motherboard seems way too cheap considering the other components in there
Normally I don't skimp on motherboards in a system build because it's limitations determine the upgradability and useful life of a machine

Or is there no advantage to using a better motherboard for mining?

Like if you got this one:
http://www.ebuyer.com/393530-asus-sabertooth-990fx-r2-0-socket-am3-8-channel-audio-atx-motherboard-sabertooth-990fx-r2-0

It's capable of running PCIe 2.0 x16/x8/x8/x4

Whereas the ASRock mobo from the guide is only capable of running  PCIe 2.0 x8/x8/x4/x1
http://www.amazon.com/dp/B0058HUQJ0

Wouldn't that make a difference in GPU intensive activities like mining?
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