these are based off of Etherium and Zcash
okay first off, just don't manually tweak voltage values and you shouldn't have to worry about damaging anything, also the below assumes you're using the MSI Afterburner overclocking program:
Disclaimer: I'm not an expert, and the below is all from my personal anecdotal experience.
The main things you're gonna be tweaking are power limit and core offset. The thing you first have to know is that Nvidia cards already try to boost themselves until they're either throttled because they get too hot(temp limit in your settings) or until they draw too much power (power limit in your settings). For example, using semi realistic numbers, your card will already be dynamically changing between 1700mhz and 2000mhz core based on load. The upper number or ceiling will be determined and capped by hitting your power limit%, the lower number will be your base clock + core offset. And your card while running will float between the two numbers, likely staying closer to the top one.
A big thing to consider though is how much heat you can handle coming from the cards, and that scales with your power limit. The highest you could put the power limit, without having to add an A/C unit to the room the rig is in, is 85%. you do get higher hashrates just by cranking it to max, but the room will get hotter than you could passively cool and fan speeds that stay on high all the time, is bad for longevity.
So with that background, here's my recommendation:
1 - Download a run a program called You are not allowed to view links.
Register or
Login or make a 5 post minimum to see url tags. as it can display a time-average of your GPU's core speed, temp, fan speed, and power consumption as these will all vary, but average out after about an hour.
2 - Set Core offset to +100 as a baseline.
3 - See what your hashrate at max power limit % is after an hour. Write down power consumption. See what it is at 100% power limit %, at 90%, at 80%, at 70% ect... You'll notice diminishing returns the higher it is, and heat issues. Find the balance that is right for you, your ability to dissipate heat, and your power cost.
4 - Once you found the power limit % you want to run at, and while you have access to the computer, slowly turn up the core offset. I would suggest +10MHz increments at first, and run it for 10 minutes to make sure you don't get errors. As soon as it has errors, go to the last stable setting and run it for 24 hours to see if that was stable....if it was try creeping up by 5mhz, run 24 hours to see if it is stable.
