| posts: 3
I had this problem with my HD 4670 as well. For a while, I just didn't use the overclocking features with this card, since PowerPlay was working well enough, though I recently encountered a couple 2D games where the GPU would inexplicably max out even with v-sync enabled.
I decided to configure some overclocking profiles to force idle clocks in those situations, but noticed the 'Memory Speed' slider kept reverting to a lower than idle position each time the settings were applied. The actual clocks were getting applied correctly, as evidenced by GPU-Z and frame-rates in other tests, but the memory slider wouldn't remain in place, preventing the desired profile from being saved. After checking here, I found the suggestion to reinstall using the 'software clocks' option, and the slider now stays in its correct position.
This wasn't exactly intuitive though, even for someone who's been using ATI Tray Tools for a while. It would be nice if there were the option to toggle the clock detection setting directly from the overclocking screen, since that's where people are likely to encounter problems with it. Of course, I don't know whether this could be easily accomplished while ATI Tray Tools is running, as I assume it may be on the install screen rather than an in-program setting for some reason.