Guys over at Expreview got their hands on a unique GALAX GTX 1070. This is the only (excluding water-cooled models) Pascal GP104 graphics card designed to be single-slot.
Even though card occupies just one slot, the cooling efficiency is good enough for few extra MHz’s:
Which makes it slightly faster in synthetic tests:
But at the expense of higher power consumption and temperature (which eventually drops under Founder Edition after a while):