For me it fixed Hawken PhysX issues and while I can "only" OC to 1085mhz instead of 1200mhz, I can still OC memory to 3000mhz stable. So no major complaints though if I can get my additional 100mhz OC back that would be great.
I suspect there are ~some~ improvements because on my tweaked Hawken MAX settings at 1085mhz performance is pretty good, especially with TripleBuffering on and CPU PhysX only (though GPU PhysX at super-high is a thing to behold, stuff flying everywhere... insane).