Acnodes FES 5313 - Manual (Page 44)

Onboard ATA Controller Configuration
Sandybridge PPM Configuration
EIST
This field is used to enable or disable the Enhanced Speed-Step Technology.
Turbo Mode
The options are Enabled and Disabled.
CPU C3 Report to CPU C7 Report
Enables or disables CPU C3 (ACPI C2), C6 and C7 (ACPI C3) report to OS.