What is a good board that support's three or four AMD card's for bitcoin mining.

[Ryathor]

I'm trying to invest back into hardware with the bitcoins I earn and some extra money. I have 4 AMD cards an RX 480 4GB, two R7970's 3GB's and an HD 6950. I wanted to split the cards into two cases so I can use my main pc for gaming some times when I'm not mining, and have the other pc mining all the time. I'm just looking for a good board that can support at least 2 maybe 3 cards in hopefully 16x or 8x. I'm not really sure if any do. I really don't feel like building a rig and would rather have them in a case of some sort. Not sure if boards have 3 pci e slot's that run in 16x. Help me out! thanks.

 

[velocityg4]

You don't need 16x or 8x. 1x is more than enough to supply a GPU for mining. Any board with four PCIe x16 slots spaced far enough apart should work. With powered x1 to x16 PCIe extenders. You just need four PCIe x1 slots.

Even some old Core 2 Duo with enough slots would work.

Here are some extenders.
https://www.amazon.com/LTERIVER-Dedicated-Graphics-Extension-Currency/dp/B00Y8N868S/

Here is a list of cheaper boards and the number of cards they support.
http://cryptomining-blog.com/tag/motherboard-for-ethereum-mining/

Then save money and build or buy a simple wood open air mining case.