and in the other 5% most apps use Intel C/C++ compiler witch (intentionally) select the most fucked up trashy unoptimized compile route possible on AMD processors. So AMD is in a pretty bad position here since AMD processor need a lot more horse power to reach a comparative level of performance in the apps it can shine <----(don't ask me links use google you will be impressed of how nasty is the performance hit when using intel compiler showing and AMD cpu and when you hack it to mask you AMD cpu as an intel CPU)
Yup I've read about it... weren't several lawsuits filed (and won) against Intel because of this? I think it's still happening, but Intel has enough money to cover it up. Intel can be very, very evil.
And it's not just for AMD CPUs. The Intel compiler would limit code on all non-Intel CPUs, including VIA, etc.