Boxed Processor Specifications
110
The fan power header on the baseboard must be positioned to allow the fan heat sink
power cable to reach it. The fan power header identification and location must be
documented in the suppliers platform documentation, or on the baseboard itself. The
baseboard fan power header should be positioned within 177.8 mm [7 in.] from the
center of the processor socket.
8.3.2
Boxed Processor Cooling Requirements
As previously stated the boxed processor will be available in two product
configurations. Each configuration will require unique design considerations. Meeting
the processor’s temperature specifications is also the function of the thermal design of
the entire system, and ultimately the responsibility of the system integrator. The
processor temperature specifications are found in
Chapter 6
of this document.
8.3.2.1
1U Passive/3U+ Active Combination Heat Sink Solution (1U Rack
Passive)
In the 1U configuration it is assumed that a chassis duct will be implemented to provide
a minimum airflow of 15 cfm at 0.38 in. H
2
O (25.5 m
3
/hr at 94.6 Pa) of flow
impedance. The duct should be carefully designed to minimize the airflow bypass
Table 8-1.
PWM Fan Frequency Specifications for 4-Pin Active CEK Thermal Solution
Description
Min Frequency
Nominal Frequency
Max Frequency
Unit
PWM Control
Frequency Range
21,000
25,000
28,000
Hz
Table 8-2.
Fan Specifications for 4-Pin Active CEK Thermal Solution
Description
Min
Typ
Steady
Max
Steady
Max
Startup
Unit
+12 V: 12 volt fan power supply
10.8
12
12
13.2
V
IC: Fan Current Draw
N/A
1
1.25
1.5
A
SENSE: SENSE frequency
2
2
2
2
Pulses per fan
revolution
Figure 8-11. Fan Cable Connector Pin Out for 4-Pin Active CEK Thermal Solution
Table 8-3.
Fan Cable Connector Pin Out for 4-Pin Active CEK Thermal Solution
Pin Number
Signal
Color
1
Ground
Black
2
Power: (+12 V)
Yellow
3
Sense: 2 pulses per revolution
Green
4
Control: 21 KHz-28 KHz
Blue
Содержание L5310 - Cpu Xeon Quad-Core Lv 1.6Ghz Fsb1066Mhz 8M Fc-Lga6 Tray
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