Technical Product Specification

Platform Management Overview Intel® Server Board S2600IP and Intel® Workstation Board W2600CR TPS
64 Intel order number G34153-004 Revision 1.4
4.4.6 Thermal Sensor Input for Fan Speed Control (FSC)
The BMC uses various IPMI sensors as inputs to FSC. Some of the sensors are actual physical
sensor and some are “virtual” sensors derived from calculation.
The following IPMI thermal sensors are used as input to the fan speed control:
 Front Panel Temperature Sensor
1
 Baseboard Temperature Sensor
2
 CPU Margin Sensors
3, 5, 6
 DIMM Thermal Margin Sensors
3, 5
 Exit Air Temperature Sensor
1, 4, 8
 PCH Temperature Sensor
4, 6
 On-board Ethernet Controller Temperature Sensors
4, 6
 Add-In Intel SAS/IO Module Temperature Sensors
4, 6
 PSU Thermal Sensor
4, 9
 CPU VR Temperature Sensors
4, 7
 DIMM VR Temperature Sensors
4, 7
 iBMC Temperature Sensor
4, 7
 Global Aggregate Thermal Margin Sensors
3, 8
Notes:
1. For fan speed control in Intel chassis
2. For fan speed control in 3rd party chassis
3. Temperature margin from throttling threshold
4. Absolute temperature
5. PECI value
6. On-die sensor
7. On-board sensor
8. Virtual sensor
9. Available only when PSU has PMBus*
A simplified model is shown as below which gives a high level concept of the fan speed
control structure.