I'm just wondering if anyone has done any experimentation to find a proper GPU / MEM clock ratio for these radeon cards..
I know that the clocks are decoupled and can be set individually, but for streamlined operation (making sure the GPU isn't waiting for a memory tick or vice-versa) it seems like there should be a clock ratio that gives best performance. I'm not super
familiar with GPU architecture, so I may be way off base, if anyone actually knows better please clarify.
For example, if there was a 3/1 clock ratio for GPU to MEM, 999/333 might perform better than, say, 1000/333 due to misaligned cycles.
If there's any merit to this idea, it may only show up in long-term averages; it's quite possible there'd be no obvious effect untill the cycles were seriously misaligned, which might happen in only 1/100 cycles.
Also note these numbers are all bogus, I didn't do any real math
Also note it's likely any effect here would end up adding up to < 1MH/s, but it could also be the difference between a nice, stable hashing speed vs one that bounces around +/- 10MH/s
So, has anyone done such research? If you've only experimented with different memory clocks, but kept track, that'd be useful info as well. With enough data we might glean useful results.