Specifications

E PENTIUM® PRO PROCESSOR AT 150, 166, 180, and 200 MHz
93
Table 38. Electrical Test Criteria for Systems Not Employing Header 8
Criteria Refer To: Comment
V
CC
P
Primary CPU V
CC
Voltage
Table 33
including
note 4
Measured Under the following Loading Conditions:
Max I
CC
P at Steady-State
Min I
CC
P at Steady-State
Fast Switch between Max and Min I
CC
P
Refer to Table 33 for OverDrive
®
processor I
CC
P specification.
Table 39. Electrical Test Criteria for all Systems
Criteria Refer To: Comment
V
CCS
Secondary CPU V
CC
Voltage
Table 33 Loading Conditions:
• Max I
CC
S at Steady-State
• Min I
CC
S at Steady-State
• Fast Switch between Max and Min I
CC
S
Refer to Table 33 for OverDrive
®
processor I
CC
S
specification.
V
CC5
Table 33 Fan/Heatsink Voltage
V
CC
continuity to
Socket 8
Table 28 0.5W or less for any single pin from Socket 8 V
CC
pins to V
CC
supply.
Applies to both primary and secondary pins and their
respective supplies.
VSS continuity to
Socket 8
Table 28 0.5W or less for any single pin From Socket 8 VSS pins to
VSS supply.
RESERVED Pins Table 28 Must not be connected.
Input signal quality Section 5.2 Must meet specification of the Pentium
®
Pro processor.
AC timing
specifications
Section 3.15 Must meet all AC specifications of the Pentium Pro processor.
8.6.2.2. Pentium
®
Pro Processor Electrical
Criteria
Motherboards and systems will be tested to the
specifications of the Pentium Pro processor in
Section 3.
8.6.3. THERMAL CRITERIA
8.6.3.1. OverDrive
®
Processor Cooling
Requirements (Systems Testing
Only)
The maximum preheat temperature, T
PH
, for the
OverDrive processor must not be greater than
specified in Section 8.5.1. T
PH
is the temperature of
the air entering the fan heatsink and is measured 0.3
inches (0.76 cm) above the center of the fan.
Thermal testing should be performed at the OEM
specified maximum system operating temperature
(not less than 32°C), and under worst case thermal
loading. Worst case thermal loading requires every
I/O bus expansion slot to be filled with the longest
typical add-in card that will not violate the required
clearance for airflow around the OverDrive processor
(refer to Section 8.2.2.2. for these requirements).
These add-in cards represent typical power
dissipation per type and form factor (Full length PCI,
VL, ISA, and ½ length PCI dissipate 10W; ¾ length
ISA dissipates 7.5W, ½ length ISA dissipates 5W,
and ¼ length ISA dissipates 3.3W).