Quote from: notthematrix on April 08, 2015, 12:30:01 PM

Quote from: teslaman on April 08, 2015, 09:22:29 AM

Quote from: bgibso01 on April 07, 2015, 02:58:23 PM

So how far whacked is the latest firmware for Neptune in terms of Watts shown? I've got 6 cubes running on 220v and it says on the gui that it is only using 1700w for 4Th. I realize that's probably at the chip level, but is there some other significant draw? I don't have a kill-a-watt for 220v or I'd check at the wall/PDU.

I'm in the same boat as you, using 220/240V with no way to measure. Indeed, that number is just on the Cube side, but I haven't seen any differences between firmware versions. My worst Neptune runs at 1,400W with undervolting, so 1,700w sounds about right for 6 Cubes.

Someone on the now nuked KnC forum (either shyliar, or prototype) had written up how to estimate total usage at the wall, but I don't remember it. I ended up at a 1,900W estimate at the wall for the Neptune showing 1,400W on the web interface. I just use the % difference between those numbers to calculate my other Neptune's usage. It must be fairly accurate, because I have 15 Cubes running on a 30A 240V circuit and the breaker stays fairly warm. That should be running right around the recommended continuous load max of 80% on the breaker.

If you don't mind burning money (like some "Einsteins" around here, lol), you could get one of these to get an actual reading at the breaker box: http://www.amazon.com/Fluke-323-True-RMS-Clamp-Meter/dp/B00AQKIEXY/ Of course, there are cheaper brands, but they all look like cheap junk after reading the reviews.

Quote from: bbuser on April 08, 2015, 06:02:35 AM

Repositioned the cubes and lowered all their voltage to factory default. Running a bit cooler now.

Did you accidentally go the wrong direction on the voltages? A higher negative number equals a lower voltage. So -0.0439V is lower than -0.0366V.

this realy depends on the PSU

Gold VS platinum VS titanium
http://en.wikipedia.org/wiki/80_Plus best results with
http://www.evga.com/Products/Product.aspx?pn=220-T2-1600-X1

Now you can also see that in the US you lose more power when not using 230V