Intel QX9770 - Core 2 Extreme Quad-Core Processor User Manual

LGA775 Socket Heatsink Loading
38 Thermal and Mechanical Design Guidelines
Note: Intel
®
Core™2 Extreme processor QX6800 B3 stepping and QX9770 C0 stepping do
not have an on-die thermal diode. The T
CONTROL
in the MSR is relevant only to the
DTS.
4.2.11 Platform Environmental Control Interface (PECI)
The PECI interface is a proprietary single wire bus between the processor and the
chipset or other health monitoring device. At this time the digital thermal sensor is
the only data being transmitted. For an overview of the PECI interface see PECI
Feature Set Overview. For additional information on the PECI see the processor
datasheet.
The PECI bus is available on pin G5 of the LGA 775 socket. Intel chipsets beginning
with the ICH8 have included PECI host controller. The PECI interface and the
Manageability Engine are key elements to the Intel
®
Quiet System Technology
(Intel
®
QST), see Chapter 6 and the Intel
®
Quiet System Technology (Intel
®
QST)
Configuration and Tuning Manual.
Intel has worked with many vendors that provide fan speed control devices to provide
PECI host controllers. Consult the local representative for your preferred vendor for
their product plans and availability.
§

Intel QX9770 - Core 2 Extreme Quad-Core Processor Specifications

General

Processor Number	QX9770
Number of Cores	4
Thread Count	4
Clock Speed	3.2 GHz
L2 Cache	12 MB
Bus Speed	1600 MHz
Thermal Design Power (TDP)	136 W
Socket	LGA 775
Manufacturing Process	45 nm
Max Operating Temperature	64.5°C
Virtualization Technology	Yes
64-bit Support	Yes
Instruction Set	SSE4.1
Memory Channels	2
Memory Types	DDR3