Checking out bitmain store as I do once in a while, I can agree with philipma1957, the prices are totally nuts.
To me, it seems like bitmain is going the way of big electronics producers and is launching tens of models with a slightly different number and some slightly different specs just to fool you into thinking one of them is a bargain.
What the hell is with those things:
Antminer S9k-13.5TH/s Hashrate: 13.5TH/s Shipping date: 20-30, Sep. 2019 $310.00
Antminer S9k-14TH/s Hashrate: 14TH/s Shipping in 7 $464.00
Antminer S9j-14.5TH/s Hashrate: 14.5TH/s Shipping in 7 $479.00
I'm right now looking for 20 minutes at those prices and I really have the impression they are f with us
So if you choose the s9k with 14th which would whip on the 7 you pay 50% more than the s9k with 13.5th that ships barely two weeks after?
Obviously the difference doesn't come from the hashrate since with just 15$ you can get 0.5 th more also on the s9j...
Not even mentioning the s9 se which they claim has new generation chips but the efficiency is all over the place and not matching any other unit.
yes i agree, i know, the S9K and the S9SE is the SAME MACHINE !!! with new chip (10nm ? 7nm?) because ? just look the freq !!!
S9K and S9SE are 180chips, (the standard S9 are 189chips) ... is the reason i thinks are new chip size ...
For exemple, S9 show arround 14 000ghs with 650mhz
-------------- S9SE show arround 16 000ghs with arround 460mhz
-------------- S9K show arround 14 000ghs with arround 380mhz
For conclusion, i thinks, the S9K and S9SE are same machine, the S9SE are higher frequency and downvoltage compare to S9K !!!