Just an unrelated question tho. Why would you want to mine Ethhash? Equihash would be alot more profitable with your current rig. I guess you could do it just for fun, but i really see no point in getting it to work.
I'd mine ZEC all day if it was more profitable. Right now I get around 1,600 sols on ZEC and 138 mh/s on ETH. Whattomine tells me I'd be making a few bucks more per day on ETHash.
You'd make my day if I'm wrong here, and I'm still kinda new to mining. Do those numbers not sound right?
OC settings are 75%/-100/+500. I messed around a little with the OC and nothing changed too much so i left it.