Pentium 4 Willamette 1800

Table 6-130: Pentium 4 Willamette 1800 Specifications
Processor Family	Model Name	Intel Pentium 4 Willamette

	Performance Rating	1800 MHz
	Front-side Bus Speed	400 QDR (4 × 100 MHz)
	Multiplier Ratio	18.0×
Physical Design	Interface Packing	423-Pin PGA
		478-Pin PGA
	Core Voltage	1.7 – 1.75 volts
	Power Consumption	66.7 watts
	Maximum Power	88 watts

Table 6-131: Pentium 4 Willamette 1800 Overclocking
Pentium 4 Willamette	Model Rating	1800 MHz

Overclocking Potential	Multiplier Lock Support	Locked Multiplier
	Typical Multiplier O/C	N/A
	Typical Front-side Bus O/C	440 – 460 QDR
		(110 – 115 MHz)
	Typical O/C Potential	1980 – 2070 MHz
	Maximum O/C Potential	2100+ MHz
Overclocking Tolerances	Recommended Cooling Type	Forced-Air Heatsink
	Recommended Heatsink Coolers	Zalman CNPS-5000
		Swiftech MCX-478
	Maximum Core Voltage	2.1 volts with Extreme Cooling
	Maximum I/O Voltage	3.5 volts with Chipset Cooler
	Maximum Core Temperature	77° Celsius

Strategy

The Pentium 4 Willamette 1800-MHz processor offers a good balance in its 18× core-to-processor bus multiplier ratio. Overclocking returns approaching 2100 MHz should be realized with minimal effort. However, the P4 1800 represents a transition phase in the Willamette architecture for overclocking enthusiasts; models featuring higher multipliers will offer less performance return, due to restrictions in processor bus speeds. The P4 1800 displays evidence of this shift when speed grades of the Willamette design are closely compared.