HD6850 Memory clock

[tekwarrior]

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?

[SimBesh]

same problem here, don't worry too much about lowering the memory, only really helps save heat
950 mhz on the core = ~248 MHashs

[sebdude420]

i wouldnt agree, i got a MSI R6870 Twin frozr and it runs very cool. right now its at 34C with 1000 gpu and memory clocks. 297mhash/s.

lowering the memory will also allow more electricity to get to the gpu, and the fans spin less and take less wattage so more power for the gpu.

the lowest i can take my card is 10mhz on the memory. according to amdoverdrivectrl in linuxcoin.

[tekwarrior]

Oh I don't care too much about increasing the MHashes/s but reducing the temperature would probably be good as it's at the 91°C right now. At least I'm not the only one with this problem.

[tekwarrior]

I finally managed to lower the memory clock on my card using ATI Tray Tool! 

Also I tweaked air flow a bit and I am down to 72°C now with 1028/425 Mhz on stock voltage with stock cooler, also getting about 270MHashes/sec. Seems running fine too for about 30 minutes now, will see if it stays this way.