ETC+SIACOIN dual miner is giving more than LBC coin with AMD VGAs, even with woolf "special" miner, who I don't recompensed at all. After 6 month of mining, and just one week using woolf miner and LBC with R9 380 VGAs, my friend/partner lost three rigs, to be precise thee PSUs CM M750 burnout/dead.

Seems he isn't picked the right PSU's... I think these M750 is little outdated... Smallest PSU i use is 1200w and usually i have EVGA 1300w for every rig with 6x 280x or 5x 390... But i prefer to use 1600w EVGA in rig's with 5x 390... Maybe your friend has'nt think twice before get decision to use that small watage PSU's...
I always been curious about these 8 pack PSU's... Do they sell them in package of 8 pcs or what

What this 8 pack means ?