How do I know what SDK version I have?

[Blackout]

I keep reading that an older SDK 2.1 is better... now there is SDK 2.4 in the latest catalyst drivers...

Question... HOW do I know which SDK I am running and how do I change it or roll back to an older one?

I'm running catalyst 11.5 on my 4850 x2 (very good gaming card... poor mining card)

I have two 5830s on the way.... then I even have my little laptop going with a 5870m.. surprisingly pulling about 160mhash

So all together I should be at about 1000mhash soon without spending any more than the two 5830s which were cheap...   will two crossfired 5830s outperform a 4850 x2 in other tasks... games... HD video editing + encoding... because then I might ditch the 4850 x2 (it's huge) and just put 4 5830s in my antec 1200. Plenty of cooling and power already in there.

Thanks,

- Blackout

[ffwd]

get http://www.ozone3d.net/gpu_caps_viewer/