Could anyone hazard a guess as to why ~150MB of SDKs get installed with this? It's very annoying. I, for one, don't need the Media and OpenCL SDKs, and I'd wager that 99.9% of the rest of graphics driver population doesn't either.
Developers do, however, so make a separate install package for them--or at least let everyone else de-select these during an install.
Does updating via Device Manager bypass SDKs? If so, does updating that way also update the Control Panel applet?