Resume from S4 Hibernation
Hibernation or S4 is part of the Advanced Configuration and Power Interface specification. In our custom "Resume from S4" testing, we allow the drive to enter hibernation for a period of ten minutes, from there we use our trusted stopwatch and time how long it take for the drive to resume to working desktop environment.
To meet Gen. 2 Ultrabook Certifications a drive must resume within seven seconds.
So, who is getting certified for Ultrabook today? Looking over our chart, we see all three Seagate Hybrid drives (including the new Laptop Thin 500GB SSHD) all were under the seven second cut-off time.