Some Windows users have stated being able to underclock the memory by greater than 150 MHz below the core speed using MSI Afterburner. Is this simply an artifact of the software? That is, is the actual memory speed only 150 MHz below the core, but the software reads whatever the user sets it to?
I use MSI AB to lower the memory clock down to 375. This is confirmed in CGMiner, and in GPU-Z (on the sensors tab, which reads actual values). I also notice a temp and power drop when I do it. It does work.
It does also reduce power consumption measurably. I got about 15w/card going from 685->340mhz
It is also not very easy to enable. I havent been able to reliably replicate the process. I have done it on 2 machines and cant for the life of me get it to work on the 3rd. Not quite sure what is different, I even copied the exact MSI AB files (config and bins) across.