Sensor Based Thermal Specification Design Guidance
72
Thermal/Mechanical Specifications and Design Guidelines
This is an improvement over the ambient unaware system but is not fully optimized for
acoustic benefit. The DTS thermal specification required
CA
and therefore the fan
speed in this scenario is 1500 RPM. This is less than thermistor controlled speed of
2150 RPM - even if the assumption is a T
AMBIENT
= 35 °C. This is graphically displayed
is where DTS values are less than T
CONTROL
.
For simplicity the graph shows a linear acceleration of the fans from T
CONTROL
- 10 to
T
CONTROL
as has been Intel’s guidance for simple fan speed control algorithms.
As the processor workload continues to increase, the DTS value will increase and the
FSC algorithm will linearly increase the fan speed from the 1500 RPM at DTS = -20 to
2150 RPM at DTS value = -1.
Figure 8-7. Fan Response with T
AMBIENT
Aware FSC
Summary of Contents for 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - THERMAL MECHANICAL S AND DESIGN GUIDELINES 01-2011
Page 12: ...Introduction 12 Thermal Mechanical Specifications and Design Guidelines...
Page 36: ...Independent Loading Mechanism ILM 36 Thermal Mechanical Specifications and Design Guidelines...
Page 62: ...PECI Interface 62 Thermal Mechanical Specifications and Design Guidelines...
Page 88: ...ATX Reference Thermal Solution 88 Thermal Mechanical Specifications and Design Guidelines...
Page 102: ...Boxed Processor Specifications 102 Thermal Mechanical Specifications and Design Guidelines...
Page 120: ...Mechanical Drawings 120 Thermal Mechanical Specifications and Design Guidelines...
Page 126: ...Socket Mechanical Drawings 126 Thermal Mechanical Specifications and Design Guidelines...
Page 130: ...Package Mechanical Drawings 130 Thermal Mechanical Specifications and Design Guidelines...
