SAPPHIRE Radeon™ RX 460 4G D5 OC Mining RIG

Here is my SAPPHIRE Radeon™ RX 460 4G D5 OC mining rig (http://www.sapphiretech.com/productdetial.asp?pid=6EE0F852-1131-4F49-AA23-F60B3B52F2C0&lang=eng)

Rig is based on 6 GPUs and 650W psu, on Biostar 250 motherboard and Intel pentium chip.

°GPU temps are 58-62°C for all

°Hashrate is 66-67 MHz for etherum in claymore dual mining

°Power from the wall is 45-50W per card (excluding motherboard)

°Power Cost is 0.08$ per unit.

°Total cost of rig is 1200$

To cool down the rig i use 2 wall fan, I haven't unlock the card or OC them it's running on out of the box specifications.

Suggestions are welcome.