"Gold" is an efficiency rating, NOT a "how well engineered for long life" rating.
Gold-rated power supplies TEND to be better engineered, but not always.
Biggest issue I have with the GQ series (AND the new G3 series) is that junk "fancy name sleeve bearing" fan in the things - they DO NOT LAST in high-load high-temp environments anywhere near as long as ball bearing fans do (like the G2 series uses).
Oh I know it's not a quality but an efficiency rating. But when the psu sports an 80+ gold rating, it means it should be able to sustain the constant 80% load I put them under (which those GQ do... just not for very long, apparently). In any case I was wrong/lucky on that third PSU. It ended up being a fried connector to one of the risers. So that PSU's off the hook... for now
@dragonmike -- AMD's are not so great on Equihash. I would put them to work on Cryptonite or ETH.
Yeah I know, but if BTG becomes a short-term cash cow, it might still be worth having the AMD rigs ready anyway. Wouldn't hurt. I'll try readying up the Claymore AMD miners.