Intel QX9770 Design Guidelines - Page 18
TCONTROL, Intel, Quiet System, Technology Intel
UPC - 735858197564
View all Intel QX9770 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 18 highlights
LGA775 Socket Heatsink Loading temperature. Using the example in Figure 3 for a processor dissipating 110W the maximum case temperature is 52.2°C. See the datasheet for the thermal profile. Figure 3. Example Thermal Profile 2.2.3 TCONTROL TCONTROL defines the maximum operating temperature for the digital thermal sensor when the thermal solution fan speed is being controlled by the digital thermal sensor. The TCONTROL parameter defines a very specific processor operating region where fan speed can be reduced. This allows the system integrator a method to reduce the acoustic noise of the processor cooling solution, while maintaining compliance to the processor thermal specification. Note: The TCONTROL value for the processor is relative to the Thermal Control Circuit (TCC) activation set point which will be seen as 0 via the digital thermometer. As a result the TCONTROL value will always be a negative number. See Chapter 4 for the discussion the thermal management logic and features and Chapter 6 on Intel® Quiet System Technology (Intel® QST). The value of TCONTROL is driven by a number of factors. One of the most significant of these is the processor idle power. As a result a processor with a high (closer to 0) TCONTROL will dissipate more power than a part with lower value (farther from 0, e.g. more negative number) of TCONTROL when running the same application. The value of TCONTROL is calculated such that regardless of the individual processor's TCONTROL value the thermal solution should perform similarly. The higher power of some parts is offset by a higher value of TCONTROL in such a way that they should behave similarly in the acoustic performance. 18 Thermal and Mechanical Design Guidelines