Specifications

PENTIUM® PRO PROCESSOR AT 150, 166, 180, and 200 MHz E
94
8.6.3.2. Pentium
®
Pro Processor Cooling
Requirements (Systems Testing
Only)
The Pentium Pro processor case temperature must
meet the specifications of the Pentium Pro
processor. Thermal testing should be performed
under worst case thermal loading (Refer to 8.6.3.1.
for loading description), and with a cooling solution
representative of the OEM’s cooling solution.
Refer to Table 5 for the Pentium Pro processor case
temperature specification.
8.6.3.3. Voltage Regulator Modules
(Systems Employing a Header 8
Only)
The case temperature of the voltage regulator on the
OverDrive VRM must not exceed the specification of
Table 40.
Table 40. Thermal Test Criteria
Criteria Refer To: Comment
T
PH
Section 8.5.1. Air temperature entering the fan/heatsink of the OverDrive
®
processor. Measured 0.3 inches (0.76 cm) above the center
of the fan/heatsink.
Pentium
®
Pro
processor Case
Temperature
Table 5 T
C
must meet the specifications of the Pentium Pro
Processor. Measured with a cooling solution representative
of the OEM’s.
Voltage Regulator
Case Temperature
Table 35
8.6.4. MECHANICAL CRITERIA
8.6.4.1. OverDrive
®
Processor Clearance and Airspace Requirements
Refer to Figure 48 for a drawing of the various clearance and airspace requirements
Table 41. Mechanical Test Criteria for the OverDrive
®
Processor
Criteria Refer To: Comment
Minimum airspace from
top surface of socket to
any object.
Figure 48 See “Total Clearance Above Socket” in Figure 40.
Minimum airspace
around all 4 sides of the
OverDrive
®
processor
fan/heatsink.
Figure 48 Required from the CPU package side to the top of the vertical
clearance area. See “A” in Figure 40.
Minimum airspace
around heatsink clip
tabs.
Figure 48 Extend from the motherboard surface to the top of the
fan/heatsink. See “Keep Out Zones” in Figure 40.
ZIF socket lever
operation.
Figure 48 Must operate from fully closed to fully open position with no
interference.