The 478-pin, socketed Intel® Pentium® 4 microprocessor, shown above with the heat sink attached, contains an integrated 8-KB primary (L1) cache with a secondary (L2) 256-KB Advanced Transfer Cache that resides in the processor's core and runs at the processor's internal clock speed.
The socketed microprocessor inserts into the ZIF connector mounted on the system board. A clip secures the heat sink to the connector.
The 250-W power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50 Hz. The power supply provides the DC operating voltages and currents listed in the following table.
Output Voltage1
Regulation
Minimum Current (A)
Maximum Current (A)2
+12 VDC
+/–5%
0.0
14.03
+5 VDC
+/–5%
1.0/0.24
22.0
+3.3 VDC
+/–5%
0.1/0.05
18.0
–12 VDC
+/–10%
0.0
1.0
+5 VFP
+/–5%
0.0
2.0
1Outputs meet and do not exceed SELV requirements per electrical standards (UL 1950, IEC 950, or EN60950 Par.
2.3).
2Maximum continuous combined load on +5 VDC and +3.3 VDC outputs do not exceed 150
W.
3Peak +12 VDC output power (up to 15.0 A) does not exceed 15 seconds in duration. Under this condition, tolerance on the +12 VDC output is allowed to be +–10%.
4+5 VDC minimum load is 0.2 A when there is a minimum load of 0.3 A on the +12 VDC and 0.42 A on the +3.3 VDC outputs simultaneously. +5 V minimum load is 1 A for load transient
tests.
5In system configurations where +3.3 VDC is not used, all other outputs stay within regulation while the +3.3 VDC output is in a zero load condition.
