Started this topic to see if the users of PL has found applications/games that they've tested, that benefits from enabling this function on HT enabled cpus. Would be interesting to know, and perhaps of some interest to compile a list?
I'd also be interested ;). I haven't compiled such a list myself, as I leave actual decisions as to what applications to use these features with to the end users.
In theory, it should help performance of applications that don't have that many threads on a system that isn't otherwise in a consistent heavy CPU load. It would reduce both core thrashing AND reduce the chances that the application's thread(s) get thrown onto one of the fake logical CPUs/cores.
It can definitely have some benefit to certain servers and related software, as Microsoft states here: http://msdn.microsoft.com/en-us/library/cc615012(BTS.10).aspx