If your 1060 has Hynix brand memory, that is normal hashrate.
Samsung goes to 24-25-26mh/s Micron to 23-24mh/s
That dependancy is specific to 1050Ti and 1060.
Woah don't oversell the 1060.
Even with a Samsung memory, hashrate will most not likely reach anything more than 24 MH. Heck, even if you have a Samsunng P106-100 (mining edition GPU based on the 1060) it would be hardpressed to reach 25 MH. I mean feel free to prove me wrong with actual screenshots or videos but until then, it is common knowledge that 1060's can't reach 25 MH on Ethash.