Artesyn ATCA-8310 Installation and Use (May 2014) - Manual (Page 121)

BIOS
ATCA-8310 Installation and Use (6806800M72E) 121
5.3.2.5.1 Power and Performance
Figure 5-10 Power and Performance
Table 5-11 Power and Performance Field Description
Field Description
Intel(R) SpeedStep(tm) Allows more than two freq. range to be supported
Boot performance
mo(de) Select the performance state that the BIOS will set before OS handoff.
Turbo Mode Enable processor Turbo Mode (requires EMTTM enabled too).
Extreme Edition Enable/Disable Extreme Edition support
C states Enable/Disable CPU Power management. Allows CPU to go to C states
when it's not 100% utilized.