I just received my first D3 - I was shocked to see 20GHz average!

AND very happily surprised to see that I had the option to control the fan speed! (50% works perfectly and is much less noisy than the auto-tune S9!)
Just wanted to say "hi" to the thread... I'm sure I'll have a ton of questions. (i.e., pool questions / firmware / etc.)
is 50 percent safe?
I'm guessing you're questioning the temps? The Temp (PCB) averages 64 and the Temp(Chip) about 83. Since I'm new, I'm just assuming that's an OK range?
Elapsed MH/S(RT) MH/S(avg) FoundBlocks LocalWork Utility WU BestShare
8h39m47s 18,810.0 19,332.69 0 182,389 5.45 273.67 57303
Chain# ASIC# Frequency MH/S(RT) HW Temp(PCB) Temp(Chip) ASIC status
1 60 537 6291.87 0 65 83 oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooo
2 60 537 6301.11 0 63 81 oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooo
3 60 537 6217.02 5 64 84 oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo oooo
Speed (r/min) 3,750 3,780