You can't just take someone else's clock numbers and use them. You need to tune your own clocks for your own card/mobo combination.
Actually, for clocks, you can. It has been demonstrated many times over that specific ratios at specific clocks, people reach similar sweet spots.
Where things vary a lot is with drivers/miner/thread conc/intensity/GPU thread. With those, you are on your own but still you should start with trying the common ones.
so frustrating, basically i can only clean install drivers with a clean install windows which requires waiting for automatic updates like .net. are there RECOMENDED drivers for 7970's generally? im on 13.1, tried 12.6 but cgminer just wouldnt work on it, maybe due to app sdk