I have just set up 2 x 1080ti for mining and they are running fine until when I try to adjust memclock and core clock setting in afterburner. I am using flypool and the miner will not work anymore after I made the changes. If I reset everything then it’s working again.
Please help 
What type of card? Manufacturer. Model.
What did you set the core and mem settings to when you overclocked?
My suggestion, drop the settings incrementally and test until stable.
I got the corsair hydro 1080ti and I was setting core to around 2000 and mem to 6000.
try to play around with core clock only, find a stable one and then try to mess with memory clock to see if it gives you some more sol/s
Thanks for the advice and yes it works when I do minimal adjustment each time. I guess I just need to spend time to optimize the cards.
What is your power usage? Did you decreased power usage and how much?
I just set it to 95% limit and is there anywhere to check the power usage on each GPU?
Yes. When you edit .bat file of ebwf miner, at the end of the row type --cuda_devices 0 1 2 3 4 5 --pec. Then you’ll have power consumption stat on your miner for every gpu…
Here’s an example: miner.exe --server mining.miningspeed.com --user xchsj54yh7834yfudhfuihgfuirtre78yfg.A01 --pass x --port 3092 --cuda_devices 0 1 2 3 4 5 --pec
cuda_devices 0 1 2 3 4 5 is number of gpu’s you have. Be aware that 0 is first gpu, so in this case you have rig with 6 gpu’s.
Basically, all my gpus works fine with optimal efficiency sol/wat on Afterburner settings:
Thanks a lot for the info and I am using around 250w per card with about 3.12 sol/w. Is it good?
Yes, it is good.