As an underclocker  biased miner.

I love this gear  750 watts 1350 gh fan on 40 not crazy loud.

this replace 3 s-3's  they would use 1100 watts to do 1350 gh  I sold off 4 s-3's and will sell some more this week.

I had 12 s-3's

I plan to have 4 s-3s and 4 sp20's
.

if you really want 1700gh then this is not satisfactory.
it  does burn a lot more power to get to 1700gh.  about .7 watts a gh vs .55 watts a gh
reminds me of a gpu miner back in 2012.

So if you have very cheap power you may be annoyed that it really does not like running at 1700gh. it is a lot more relaxed at 190 watt setting  or even 170 watt setting doing 1320gh to 1400gh