A processor is also known as microprocessor, CPU, or central processing unit.
There are two types of Pentium 4 2.0 GHz processors: Willamette and Northwood. The series was launched by Intel in the first quarter of 2002. These processors are single-core, single-threaded processors.
Clock Speed
The clock speed for both the Northwood and Willamette processors is 2.0 GHz. Clock speed is the frequency at which the CPU (central processing unit) runs.
Cache Memory
The Willamette processor has a level two cache of 256 kilobytes. The Northwood processor has a level two cache of 512 KB. Cache memory is used to store and retrieve frequently used data. Cache memory is faster than RAM or system memory. The more cache memory the processor has, the faster it can process instructions.
FSB Speed
The speed of the front side bus (FSB) for both processors is 400 MHz. The FSB is the connector between the CPU and the system memory.
Bus/Core Ratio
The bus/core ratio for both the Northwood and Willamette processors is 20. This ratio measures the difference between the FSB speed and the processor speed. In this case, the core is 20 times faster than the FSB speed.
Instruction Set
Both the Willamette and Northwood processors have 32-bit instruction sets. Thirty-two bit processors can only be paired with 4 GB of system memory or less.
Lithography
Lithography refers to the size of the processor's transistors. A smaller number means more transistors can be contained on the surface and reduced consumption of power in comparison to a higher number. The Willamette processor's lithography is 180 nanometers, and the Northwood processor's lithography is 130 nanometers. Therefore, the Northwood processor's transistors are significantly smaller.
Max TDP
TDP or Thermal Design Power refers to the maximum power the processor will consume in an extreme situation. The Max TDP for the Northwood processor is 54.3 watts. The max TDP for the Willamette processor is 71.8 watts.
VID Voltage Range
VID or voltage identification range refers to the operational voltage range for the component. The Willamette CPU VID range is 1.56 to 1.75 volts. The Northwood CPU VID range is 1.36 to 1.435 volts.
Case Temperature
The maximum case temperature for the Northwood processor is 69 degrees Celsius or 156.2 degrees Fahrenheit. The maximum case temperature for the Willamette CPU is 74 degrees Celsius or 165.2 degrees Fahrenheit.
Package Size
The dimensions or package size of the Willamette processor is 53.3 millimeters by 53.3 millimeters (2.1 inches by 2.1 inches). The dimensions of the Northwood processor is 35 millimeters by 35 millimeters (1.38 inches by 1.38 inches).
Tags: Northwood processor, Willamette processor, system memory, both Northwood, both Northwood Willamette, Cache memory