Intel i7-660LM CN80617004857AA Manual De Usuario
Los códigos de productos
CN80617004857AA
Datasheet
63
Thermal Management
5.2.1.5
THERMTRIP# Signal
Regardless of enabling the automatic or on-demand modes, in the event of a
catastrophic cooling failure, the processor will automatically shut down when the silicon
has reached an elevated temperature that risks physical damage to the processor. At
this point the THERMTRIP# signal will go active. THERMTRIP# activation is independent
of processor activity and does not generate any bus cycles.
5.2.1.6
Critical Temperature Detection
Critical Temperature detection is performed by monitoring the processor temperature
and temperature gradient. This feature is intended for graceful shutdown before the
THERMTRIP# is activated. If the processor's Adaptive Thermal Monitor is triggered and
the temperature remains high, a critical temperature status and sticky bit are latched in
the thermal status MSR register and also generates a thermal interrupt if enabled. The
assertion of critical temperature bit indicates that processor can no longer be assumed
to be working reliably.
5.2.2
Integrated Graphics and Memory Controller Thermal
Features
The integrated graphics and memory controller provides the following features for
monitoring the integrated graphics and memory controller temperature and triggering
thermal management:
• One internal digital thermal sensor.
• Hooks for an external thermal sensor mechanism which can either be TS-on-DIMM
• Hooks for an external thermal sensor mechanism which can either be TS-on-DIMM
or TS-on-Board.
The integrated graphics and memory controller has implemented several silicon level
thermal management features that can lower both integrated graphics and memory
controller and DDR3 power during periods of high activity. As a result, these features
can help control temperature and help prevent thermally induced component failures.
These features include:
• Bandwidth throttling triggered by memory loading.
• Bandwidth throttling triggered by integrated graphics and memory controller
• Bandwidth throttling triggered by integrated graphics and memory controller
heating.
• THERMTRIP# support.
• Render Thermal Throttling
• Render Thermal Throttling
5.2.2.1
Internal Digital Thermal Sensor
The integrated graphics and memory controller incorporates one on-die digital thermal
sensor for thermal management. The thermal sensor may be programmed to cause
hardware throttling and/or software interrupts. Hardware throttling includes render
thermal throttling and main memory programmable throttling thresholds. Sensor trip
points may also be programmed to generate various interrupts including SCI, SMI,
INTR, and SERR. The internal thermal sensor reports six trip points: Aux0, Aux1, Aux2,
Aux3, Hot, and Catastrophic trip points in order of increasing temperature.
5.2.2.1.1
Aux0, Aux1, Aux2, Aux3 Temperature Trip Points
These trip points may be set dynamically if desired and provides a configurable
interrupt mechanism to allow software to respond when a trip is crossed in either
direction. These auxiliary temperature trip points do not automatically cause any
hardware throttling but may be used by software to trigger interrupts.