First of all i want to thank Eliovp for the sharing of knowledge and all the thread participants for the added infos.
I'm on the -175mV rom since 4 days now and all is fine but headless boot won't work.
I need to plug hdmi to monitor and it boots fine
at the moment i have two nanos on usb risers and one on motherboard, one 700W PSU
mobo is H81 Pro BTC and i'm booting lubuntu with claymore's on thumb usb
@Eliovp: i think i have read u have the same mobo and same cpu celeron g1840 did u have issues on headless booting?
also i'm on 312w reading on killawatt for mobo+3nanos with your stock -175mV rom audio and sata's disabled is that good? i thowght i'd go lower with 75watt for each nano i was expecting.
i'm going to try -200mV stock soon.
Thank you again

good mining to all.