I think You understood my question
About me I'm just training with my 6950, still no flash or something more
My question was about ethic, I'll made an example:
Unigine Heaven Extreme with original HD6950, e.g. 925/1300 (quite average frequencies, I guess); result 1300 (just for example)
After that I unlock the vga and, at same frequencies, the result will be better than the previous one. It is valid and admitted, but, imho, not legit