Is SHE(super hybrid engine) on asus eepc netbooks really working?

Like the question states is the SHE (Super Hybrid Engine) function on asus EeePC netbooks really working? Is there a way to test this? also She is like underclocking/overclocking automatically right? if so how can i access this feature safely and manually if possible? i am not too Tech savvy and any answers to this subject will be greatly appreciated.
