I'm building a mining rig

Hardware Build a PC
1

I have bought some items and putting together a mining rig.

Specs to be-

- ASROCK H81 PRO BTC Motherboard LGA1150 1 x PCIe 2.0 x16, 5 x PCIe 2.0 x1 Bitcoin  $129 

 - Intel Core i3 4130 LGA1150 CPU @3.4Ghz 3Mb Cache Haswell(35w power usage) $90 from gumtree.

- various aluminium parts for diy chassis  $50

- a few pci-e riser cards on the way from ebay

-already have 2 7970's  

I'm getting roughly 1470kh/s mining doge coins.
I'm using 820w at the wall with my old and faithful i7 950 1366.
I hope this new mobo and cpu i will drop power usage at-least 50-100w 
the real reason i have posted this is because i have not heard anything about this motherboard except 2 or 3 people who have voted up or 5/5 stars. anybody have experience with this mobo?
i will add images soon enough. 

2

Asrock mobo's are durable and reliable. I'm not sure how durable in a mining rig but I assume it's up to the task running 24/7. Also If I were you I'd run the cheapest 1150 CPU available. Like a celeron or something

3

the i3 is $90 on gumtree (picking it up tommorow) it is $166 new so i dont mind. 
oh and http://www.asrock.com/mb/Intel/H81%20Pro%20BTC/
its a mining specific mobo.