This tool will allow you to save a lot of time.
You can easily configure it to test for maximum performance. In ethos mining os there is a lot of mining programs.
Instead of trying to overclock gpus manually now you can use this tool.
It will let you configure and test gpus core freq. , gpus memory freq. and gpus power.
https://github.com/yarustr/autotuningSupported algorithms are :
bitcore
blake2s
blakecoin
c11
cryptonight
equihash
Groestl
keccak
lyra2v2
myr-gr
neoscrypt
nist5
quark
qubit
scrypt
skein
skunk
tribus
x11
x17
xevan