Intel S2600IP Service Guide - Page 133

BIOS Setup Utilities Comments: The Thermal Throttling Mode chosen reflects whether the DIMMs have Temperature Sensors (TSOD), and whether the chassis is an Intel chassis for which thermal data are available. Note that this is for thermal throttling only, independent of any controls imposed for the purpose of power limiting.  DCLTT is the expected mode for a board in an Intel chassis with inlet and outlet air temperature sensors and TSOD. The firmware can update the offset registers for closed loop during runtime, as BIOS sends the dynamic CLTT offset temperature data.  SCLTT would be used with an OEM chassis and DIMMs with TSOD. The firmware does not change the offset registers for closed loop during runtime, although the Management Engine can do so.  SOLTT is intended for a system with UDIMMs which do not have TSOD. The thermal control registers are configured during POST, and the firmware does not change them. 2. Altitude Option Values: 300m or less 301m-900m 901m-1500m Higher than 1500m Help Text: [300m or less](980ft or less) Optimal near sea level. [301m-900m](980ft-2950ft) Optimal performance setting at moderate elevation. [901m-1500m](2950ft-4920ft) Optimal performance setting at high elevation. [Above 1500m](above 4920ft) Optimal performance setting at the highest elevations. Comments: This option sets an altitude value in order to choose a Fan Profile that is optimized for the air density at the current altitude at which the system is installed. 3. Set Fan Profile Option Values: Performance Acoustic Help Text: [Performance] - Fan control provides primary system cooling before attempting to throttle memory. [Acoustic] - The system will favor using throttling of memory over boosting fans to cool the system if thermal thresholds are met. Intel® Server System R2000IP Service Guide 121