Check out this motherboard mad specifically for mining. Don’t worry about risers or cpu purchases ever again. The octominer supports up to 8 gpus for cryptocurrency mining.
Octominer: https://octominer.com/
V1tech: https://www.v1tech.com/ref/blindrun/
Amazon Affiliate: http://amzn.to/2HOEbOX
But a shirt! http://sonofatech.com/merch/
Discord: https://discord.gg/PxnPaE7
Amazing Value! Octominer Mining Motherboard!