Yes you are right , but:
5 V 1.2 A it is what - 6 W
with 6 W with theoretical specs current 16 nm generation of Bitfury you will get roughly 50-60 Ghs tops and the chip will be hot as hell, so the device will need good coiling - heat sink alone will have trouble to handle the heat or it have to be oversize .
This is my reason
My watercooling project for the gekkos may well have a purpose if I can ever justify the cost of doing it

Hmm. Random thought:
A lava lamp usually uses a 75w bulb so how about gluing 5 Compacs to the bottom of one on the outside of the glass in where the bulb usually sits.. Do they have blinking lights to add to the fun?
The temp of them should not get above comfortable warm...