I’ve been using the asus b250 mining snob (I have two identical ones, but usually only using one at a time.) These things are tanks. I’ve used and abused mine and it keeps going. One of the ports caught fire. I blew it out and it kept going, except with one port less.
5700xt’s are a power hungry card (225watt max). Not saying your PSU is the ‘root’ cause, but its probably affecting stability if your PSU is starved for power. 225 x 6 = 1,350. Say you undervolt it to 125 watts then thats 125x 6 = 750 watts; still pretty close to the limit of a 1000 watt PSU, and you’ll need to factor in the equipment power draw, which will be (AT LEAST) 80 watts.
There really isn’t anything else out there, I thinking MSI has a mining board… but at this point they’ve all been marked up about 250% in price so you should just hunker down and get comfy because running three 2 card mining ‘rigs’ SUCKS. The savings in power would allow you to run an extra GPU, at least. Running 2 (6x ) rigs sounds great, but logistically if they’re in the same building you’re doing it wrong, plus you’re paying for extra equipment that you ‘must maintain.’
If you think 5/6 cards is going to drive you crazy try 12 or 14. You must take into consideration that sometimes your video cards will reset (momentarily) to stock clock/voltage settings and some PSU’s /GPU’s might not like this and crash. Some issues may pop up due to mixing of different types of risers. You should not be loading PSU’s past 65% if you want it to run for weeks on end.
Some of it is hiveOS issues (I haven’t been successful with the later versions of hiveos.) Sometimes its a miner issue; Phoenix miner has ALWAYS had issues especially with the EthPill.
Point is the power delivery on the motherboard is unmatched; you’ll have piece of mind that one typo in the hive mobile-web interface won’t cause your farm to crash and burn (maybe just crash, and boot-cycle).