Well after a week in the DC, I can clearly state these tubes SUCK!! total junk!! Unreliable heat MONSTERS!!
Out of 40 boards 10 are severely under performing and I had 1 start on fire today. Now to see IF the RMA process is as botched as the sales process.

Sorry for your mining operation, but now you see why is it worth to pay a bit more for some reliable and stable miners?
True that, Thank GOD for BitmainTech..

No damage to mine, just had to route cabling around smoked board and reset the PSUs, down "200 GH/s" more like 115 GH/s.
SPT's are fantastic machines and will likely run for decades.. BUT they are lagging on the spreadsheet for ROI and we all know (unless iceland BLOWS!!!) that NO HW will be useful past 200 days. $4K for "5.5" TH/s (IN NOVEMBER) is too high brother. BUT!! if Earth decides to blast Iceland (PLEASE!!!!) and we see some upward movement in BTC/USD I will get in line ;(