Once again I was not talking about performance, just the ability of the hardware to do it.
Of course you can run 2 card on a single board and using them individually. Nothing's stopping that, but whats the point of creating a chart for that? This is clearly about actual crossfire which is entirely different.
Crossfire isnt about running 2 cards on a board but using both to combine performance. Thats why you can disable crossfire via CCC, just because you ahve both cards in your board doesnt mean they are in crossfire.
For example, its possible to run a geforce 4 and 8800gts together. Is there any hope of them being in SLI? No of course not.
edit: need to fix your link
Also, I dont believe Megasty. It must have been something else which led to the performance increase. the drivers simply dont support it.