On that first post there is nothing about UberMix. So where is some info about it and how to use it? I have read all pages of that thread but no one was able to give me right info. It looks like ubermix is just for some choosen ones...
OMG 
guysIf you read all the thread there is a lot off version of Uber-Mix. But I recommend 3.1. First post -> performance timings -> Uber-Mix 3.1. There is also 3.2 somewhere in the end of the thread if your GPU can't handle it...
I have RX 470 Asus Strix with Samsung and Elpida and I have 818H/s with Elpida and 800 with Samsung on Monero. But I bet this one is the best for Samsung, but you could use google and find another there are plenty of them. In that thread first post is also tool to decode that straps and make your own timings
BTW all these timings is very hard to set, it tooks hours and hours for maker and testers, so you should be more thankful that they spread it to public...