That motherboard is going to choke airflow with 4 cards. you'll want two slot separation between PCIe connectors. Unfortunately no motherboard exist for this.
Example:
Here's a motherboard I bought for this but it only has 3 GPUs.
http://www.newegg.com/Product/Product.as...pk=tz77xe4
Example:
Code:
GPU1 | open slot | open slot | GPU2 | open slot | open slot | GPU3 | open slot | open slot | GPU4
Here's a motherboard I bought for this but it only has 3 GPUs.
http://www.newegg.com/Product/Product.as...pk=tz77xe4