Looking answers for this for quite some time now:
Are any of the current WD drives Native 4K?
Can an AF drive with 512e work as native 4K under an OS that supports native 4K? (maybe designed with a possibility to disable 512e?)
Does 512e emulation have any performance penalty compated to native 4K?
I have 2 1TB Velociraptors in RAID-0 under Windows 7 x64 SP1. The ONLY reason I see for moving to Windows 8 is the native 4K support. But if the drives are "locked" to this 512e emulation mode even if the OS supports native 4K, then I'll stay with Windows 7 for now.