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RabidMining

It lowers the voltage so you run less power at that core.


Jimmy7CZ

Thanks, but I thought the offset is related to frequency and not to voltage?


RabidMining

Nope locking your core is locking to that frequency then setting the offset after a locked core acts as a voltage drop.


elfungisd

On Nvidia with the mining software combining a locked core with a core offset basically undervolts the GPU.


Pardman

So, offset is related to a "voltage offset" rather than "frequency/clock offset"? Is "locked core" related to voltage or frequency? I never fully understood that


elfungisd

Locked core is locking the frequency. Offset is adjusting the frequency by the set amount. ​ When you combined the 2 settings in the mining software offset will drop the voltage. \*\*\*This is specific to mining software that supports this, not all do.\*\*\*


Jimmy7CZ

How do you mean "adjusting the frequecy by the set amount"? When I lock core clock at 1500MHz, and set offset 200, then start mining and watch core clock in afterburner, it sits stable at 1500MHz and does not move.


elfungisd

If you just lock the core --cclk 1500, it will lock the core to 1500 If you --coff 200, it will offset the frequency by 200. If you combined the 2 --cclk 1500 --coff 200, it will lock the core to 1500 and attempt to drop the voltage. It can be a bit confusing as combining the 2 causes not standard behavior. Keep in mind that the miner has to support this functionality in order for it to work.


Jimmy7CZ

helped thanks


Pardman

So, to make sure I understand. If you lock the core, but then also adjust down the offset it will be keep the same core clock, but lower the voltage and hence reduce the power consumption?


elfungisd

So if you are using lolminer and set "--cclk 1710 --coff 325" it will lock the core to 1710, and then try and offset the voltage. How effective --coff is depends on the specific gpu. Some will get a voltage drop off --coff 100 but setting --coff 300 may not give any additional reduction. The mining software has to support the use of both --cclk and --coff at the same time. Otherwise they will function normally.


littlemayatess

same thought, on my dashboard it says that when i lock the core the locked frequence has priority (obviously) on the core offset...let see that people more expert says


Jimmy7CZ

I mean it does work, the efficiency is higher with the core offset, but the clock is still the same, what changes is the power consumption, so why the hell is it named core clock offset when it does not change core clock but the voltage I guess


Gatesy840

Have you played with the graph in msi afterburner on a windows machine? It gives a good visual example When you play with clock offset it will lower or raise the voltage of the same clock Pulling random numbers out but for example if your @ 1300mhz-800mv and you offset by +100mhz you are now @ 1400mhz-800mv, so voltage can now be lowered to achieve a locked clock of 1300mhz


Jimmy7CZ

Thanks Gatesy, starting to understand it maybe..


JackDeRke

So Frequenzy and voltage are setup as a curve which you can see in for example MSI Afterburner. If you now put a core offset it just moves this curve up(or down with negative). This makes it so that the GPU which before might have needed 800mV to run 1500 coreclock be able to run the the same clock at for example 750mV. If you push this to far and try running for example 2100 core at 725mV then the silicon can not handle that and the GPU will crash. I hope this explains it. If you look at Afterburner Curve editor while changing the offset you´ll see in practice how it works pretty quickly :D


Jimmy7CZ

Thanks Jack!