[QUOTE=As for speed, my benchmarks are exactly the same on 13.6 and 13.8, though I suspect any performance increases from the drivers are limited to the newer GCN cards and crossfire setups.[/QUOTE]

I concur. Looks to me like the newer drivers are usually best suited for the latest and one generation behind graphics adapters. That's not to say they can't help older cards it's just AMD feels they have really given those cards all the boost they can and eventually retire support for them. I have that issue now in 2 other machines of mine. They both run 5770 adapters but it's only a matter of time before those don't get anymore updates. My 4850 already been flagged as obsolete and is not getting any drivers for windows 7 64 bit that I knew of. Just the wmd ones, the vanilla type and those don't support dx11. Not that it matters now. Of course my old 4850 only had 256mb of memory maybe 512mb.