1060's tdp is 120W.
I would say you would be safe if you have 1600W or more since you probably will limit the power draw to 80% anyway.
can u please suggest what brand ?
and i want to buy 2 PSU's not one ..
the guys from the store suggested me :
2x Corsair RM850x 850W PSU 80+ Gold Modular
what do u think ?
I think corsair is fine. I prefer EVGA tho.
EVGA G2 comes with a test plug for 24pin which you don't have to purchase an extra dual psu adapter.
I'm pretty sure two 850Ws are enough and even have rooms left.