Boxed Processor Fan Heatsink Weight; Boxed Processor Retention Mechanism And Heatsink Attach Clip Assembly; Electrical Requirements; Fan Heatsink Power Supply - Intel Quad-Core Xeon 3300 Series Datasheet

7.2.2

Boxed Processor Fan Heatsink Weight

The boxed processor fan heatsink will not weigh more than 450 grams. See
and the Yorkfield Processor Thermal and Mechanical Design Guidelines Addendum for
details on the processor weight and heatsink requirements.
7.2.3 Boxed Processor Retention Mechanism and Heatsink
Attach Clip Assembly
The boxed processor thermal solution requires a heatsink attach clip assembly, to
secure the processor and fan heatsink in the baseboard socket. The boxed processor
will ship with the heatsink attach clip assembly.
7.3

Electrical Requirements

7.3.1

Fan Heatsink Power Supply

The boxed processor's fan heatsink requires a +12V power supply. A fan power cable
will be shipped with the boxed processor to draw power from a power header on the
baseboard. The power cable connector and pinout are shown in
must provide a matched power header to support the boxed processor.
contains specifications for the input and output signals at the fan heatsink connector.
The fan heatsink outputs a SENSE signal, which is an open- collector output that pulses
at a rate of 2 pulses per fan revolution. A baseboard pull-up resistor provides VOH to
match the system board-mounted fan speed monitor requirements, if applicable. Use of
the SENSE signal is optional. If the SENSE signal is not used, pin 3 of the connector
should be tied to GND.
The fan heatsink receives a PWM signal from the motherboard from the 4th pin of the
connector labeled as CONTROL.
The boxed processor's fanheat sink requires a constant +12 V supplied to pin 2 and
does not support variable voltage control or 3-pin PWM control.
The power header on the baseboard must be positioned to allow the fan heatsink power
cable to reach it. The power header identification and location should be documented in
the platform documentation, or on the system board itself.
location of the fan power connector relative to the processor socket. The baseboard
power header should be positioned within 110 mm [4.33 inches] from the center of the
processor socket.
94
Boxed Processor Specifications
Chapter 5
Figure 7-5. Baseboards
Table 7-1
Figure 7-6 shows the
Datasheet