1. The Temp top left is the CPU temp. The temp in the hashboard section is the hashboard temp.
2. HW Errors will fluctuate but the longer the unit is on the more stable they become. 0.4-0.9 is perfectly acceptable.
3. Running via Wifi shouldn't effect performance at all, but it all depends on signal strength and other factors which interrupt that signal. Its always best to run an ethernet cable where possible.
Hey, thanks so much for the quick reply. I appreciate the temp clarification and figured it had to be something else. Makes sense the CPU was high when I put it in turbo for about an hour during synch. Good to know about #2.
As for Wifi, I want to place the unit (+new one once it arrives) into an adjacent room next to the router. If I see a degradation, it's a short cable run into it. I want to keep it in my home office, but I found the sound of the fan to be like white noise... It drowns out quiet background music and puts me to sleep.

Take care and thanks again!