Quote from: izF4TE on October 15, 2017, 10:40:36 PM

Why should you build 6 gpu rig if you could just buy antminer S9

NiceHash
Antminer S9 20$ per day
6GPU Gtx1070 9$

and Antminer S9 only cost 1250$
6GPU rig cost 3 times that amount...

You numbers are way off. I can build a 6 card 570 rig for around $1500 today that will mine about 12-13$ a day. If I wanted to wait for cards on sale I can do it for about $1250-1300 pretty easy.

That changes the decision quite a bit.

Is an Antminer more profitable, yes, but as others have posted you are really pigeon holing yourself on what you can mine. On a mining rig I can switch coins and mine what ever I want (even things like BTC and LTC because I can use winminer or nicehash). I can mine coins with a lot more room to grow if I wanted to keep the coins. I will always have some value with the parts of the GPU rig.

When you consider all those things the decision gets really muddy really fast. I like miners when they first come out. You can make a lot of money if you can get the first batch. I just never hand any luck with that. Once the market gets flooded (ie. D3) I don't think there is a clear winner and it just comes down to "why" you are mining and personal preference.