Boxed Intel; Core™2 Extreme Processor Qx9650; Specifications - Intel Q9300 - Core 2 Quad 2.5 GHz 6M L2 Cache 1333MHz FSB LGA775 Quad-Core Processor Datasheet

Boxed Processor Specifications
If the boxed processor fan heatsink 4-pin connector is connected to a 4-pin
motherboard header and the motherboard is designed with a fan speed controller with
PWM output (CONTROL see
capability the boxed processor will operate as follows:
As processor power has increased the required thermal solutions have generated
increasingly more noise. Intel has added an option to the boxed processor that allows
system integrators to have a quieter system in the most common usage.
The 4th wire PWM solution provides better control over chassis acoustics. This is
achieved by more accurate measurement of processor die temperature through the
processor's Digital Thermal Sensors (DTS) and PECI. Fan RPM is modulated through the
use of an ASIC located on the motherboard that sends out a PWM control signal to the
4th pin of the connector labeled as CONTROL. The fan speed is based on actual
processor temperature instead of internal ambient chassis temperatures.
If the new 4-pin active fan heat sink solution is connected to an older 3-pin baseboard
processor fan header it will default back to a thermistor controlled mode, allowing
compatibility with existing 3-pin baseboard designs. Under thermistor controlled mode,
the fan RPM is automatically varied based on the Tinlet temperature measured by a
thermistor located at the fan inlet.
For more details on specific motherboard requirements for 4-wire based fan speed
control see the appropriate Thermal and Mechanical Design Guidelines (See
Section 1.2).
7.5

Boxed Intel

Specifications

This section documents the mechanical specifications of the Boxed Intel
Extreme processor QX9650. The boxed processor will be shipped with an unattached
fan heatsink.
Clearance is required around the fan heatsink to ensure unimpeded airflow for proper
cooling. The physical space requirements and dimensions for the boxed processor with
assembled fan heatsink are shown in
The airspace requirements for the boxed processor fan heatsink must also be
incorporated into new baseboard and system designs. Airspace requirements are
shown in
(marked with alphabetic designations) to clarify relative dimensioning.
Note: The Boxed Intel
boxed processor keep out zones. This is done intentionally, and with the understanding
that Extreme Edition systems will be integrated into larger capacity chassis.
Datasheet
Table
®
Core™2 Extreme Processor QX9650
Figure 7-10 shows a mechanical representation of the boxed processor.
Figure 7-11 and Figure
®
Core™2 Extreme processor QX9650 cooling solution violates the
7-1) and remote thermal diode measurement
Figure 7-3 (top view), and
7-12. Note that some figures have centerlines shown
®
Core™2
Figure 7-4 (side view).
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