If possible, could you undo your overclocks, raise your PCI-express bus and use core monitoring software to check if the card is automatically overclocked with the PCI-e bus? Like in this article on the 9600GT. Would be sweet if it's this easy to overclock GPU's in the future and no more software running at Windows startup.
Thanks in advance and it would be great if you could have some game benchmarks (just benchmarks, you don't have to play them).