Best way to tune multi gpus when msi afterburner is what works for 1 gpu?

[Vwgtiturbo1]

So this is my 2nd rig and been had great success with watt tool on my first rig. Now the issue I am having on my new rig is that I have a powercolor rx470 and able to tune it in afterburner cause it allows me to go over 2000 mem clock speed for me to get the 28+ mhs it gives me. Not the issue is that Im having a hard time tuning each individual card. Is their a way to label them? Whats the best way for me to tune my cards? Im having a hard time telling 1 from the other. My thought is to sell this gpu and get all matching gpus. Any suggestions on how I should approach this situation?

[eth4lyfe]

instead of manually overclocking with a program, flash them individually (only 1 card connected at a time) and then you won't have to worry about it.

Otherwise, assuming the ordering schema never changes with afterburner, you could manually turn the fan on high for 1 card to see which one it is, then label them accordingly (I put a number on the metal plate of the card with a sharpie).