參數(shù)資料
型號(hào)： pentium II xeon processor
廠商： Intel Corp.
英文描述： pentium II xeon processor at 400 and 450 MHZ(工作頻率400和450兆赫茲奔II處理器)
中文描述： 奔騰II至強(qiáng)處理器400和450兆赫（工作頻率400和450兆赫茲奔二處理器）
文件頁(yè)數(shù)： 54/97頁(yè)
文件大?。?/td> 978K
代理商： PENTIUM II XEON PROCESSOR
PENTIUM II XEON PROCESSOR AT 400 AND 450 MHZ
E
54
12/15/98 5:14 PM 24377002.doc
3770-19
Figure 19. Plate Flatness Reference
The thermal sensor feature of the processor cannot
be used to measure T
. The T
specification
must be met regardless of the reading of the
processor’s thermal sensor in order to ensure
adequate cooling for the entire Pentium II Xeon
processor.
5.1.2.
PLATE FLATNESS SPECIFICATION
The thermal plate flatness for the Pentium II Xeon
processor is specified to 0.010" across the entire
thermal plate surface, with no more than a 0.001"
step anywhere on the surface of the plate, as shown
in Figure 19.
5.2.
Processor Thermal Analysis
5.2.1.
THERMAL SOLUTION
PERFORMANCE
Processor cooling solutions should attach to the
thermal plate. The processor cover is not designed
for thermal solution attachment.
The complete thermal solution must adequately
control the thermal plate and cover temperatures
below the maximum and above the minimum
specified in Table 38. The performance of any
thermal solution is defined as the thermal resistance
between the thermal plate and the ambient air around
the processor (
Θ
thermal plate to ambient
). The lower the
thermal resistance between the thermal plate and the
ambient air, the more efficient the thermal solution is.
The required
Θ
thermal plate to ambient
is dependent upon
the maximum allowed thermal plate temperature
(T
PLATE
), the local ambient temperature (T
LA
) and the
thermal plate power (P
PLATE
).
Θ
thermal plate to ambient
= (T
PLATE
– T
LA
)/P
PLATE
The maximum T
PLATE
and the thermal plate power
are listed in Table 38. T
LA
is a function of the system
design. Table 39 provides the resultant thermal
solution performance for a 450-MHz Pentium II Xeon
processor at different ambient air temperatures
around the processor.
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