It drains around 850 Watt according to their specifications, when I look at the Advanced settings screen, it tells me different, but I have no way of knowing for sure.
You actually can but it will be bothering for you. Just power down the miner and look at the energy counter of your place. Then power up and check the change.
It is nitpicking I know, but a ~250 W difference it is quite the money in the long term.
Anyway, if you say that drain is 585 at full speed I take your word for granted.
I'll see what I can do, gonna take me a second to measure it though ;p.
