I got a new HD6850 by Sapphire and tried to OC the GPU while lowering the the memory clock, as was suggested by a thread in the Mining forum.

I tried both MSI Afterburner and Trixx and still I can't really lower the memory clock of my graphics card. Both tools allow me to set a lower clockrate but the memory clock seems to be stuck at 1000 MHz anyway (at least that's what the graphs are showing; temperature and current aren't dropping either).

Does anyone have a similar experience or is it just impossible to lower the memory clock on this card?