I had 3 rigs running RX series and the R9 series with ETHOS never mix it just won't work. Just finished selling of the r9 and adding new RX in the place. of course the New ASRocks motherboard has been a dream come true. Cut Power Consumption down and hashes like a chanp.
Are you talking about the 13 PCIe slots asrocks motherboards or the 6 PCIe slots one? please give reference of the motherboard, you are talking about