guys, thanks for the input about numping memory speed. Will experiment it right away.
If using claymore, bumping the power to 70% utilization, is it using this switch -ethi 7? I read somewhere the default is 80% power intensity
Mine is Asus strix 1070, already an OC version, but I guess the memory isn't OC'ed.
Suggest you use MSI Afterburner (or similar OC utility) to set the environment and tweak the cards. This lets you change the settings while Claymore is actively mining which makes you see relatively instant results to what you're adjusting. There are several articles or videos online that show how to make the modifications, but in short, just keep bumping up the memory clock speed by 100 until you see the miner or graphics driver crash, then back it down to the last stable setting. For the power, you'll typically see hashrate drop before the card crashes, but do a similar approach. start at 100 and back the power limit down by 5 or 10% until you find a good mix of power and hashrate. 70% seems to be pretty successful for 1070s but will depend on the card.
the ethi switch may result in something similar, but I've not tried it so can't comment.