Pentium 4 Cpu And Installation; 2-1.1 To Identify A Pentium 4 Cpu - SOLTEK 85DR2-DC Manual

2-1 Pentium 4 CPU and Installation

2-1.1 To Identify a Pentium 4 CPU

Intel
PENTIUM 4
2.80 GHz / 512 / 800
2) CPU L2 Cache
1) CPU Working Frequency
On the heatsink side of a Pentium 4 CPU, there printed a line of figures to
identify its specifications. The line consists of 4 parts:
1. CPU Working Frequency: this part depicts the working frequency of
the CPU. The Intel P4 processor with three differeent System Bus
mode provides a variety of speeds ranging from 2A Ghz to 3.2Ghz.
400MHz System Bus: 2.60, 2.50, 2.40, 2.20, 2A GHz
533MHz System Bus: 3.06, 2.80, 2.66, 2.53, 2.40, 2.26 GHz
800MHz System Bus: 3.20, 3, 2.80C, 2.60C, 2.40C GHz
2. CPU L2 Cache: this part depicts the L2 Cache size. For example,
512 stands for 512 KB L2 Cache; 256 stands for 256 KB L2 Cache
3. System Bus: this part depicts the System Bus (Front Side Bus) is
provided by CPU clock x 4. For example,
800MHz = 200MHz(CPU clock) x 4; 533MHz = 133MHz x 4
400MHz = 100MHz x 4
Note: System Bus vs CPU Clock
P4 CPU is a quad-pumped CPU. The system bus is provided by the CPU
clock x 4. Therefore, users can figure out the P4 CPU clock by the System
Bus divided by 4.
Pentium 4 with Hyper Threading Technology :
(1) P4 processors at 2.40C, 2.60C, 2.80C, 3, 3.20GHz with an advanced
800MHz system bus
(2) P4 processor at 3.06Ghz with 533MHz system bus
(Hyper-Threading & Prescott CPU included)
3) System Bus
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Chapter 2 Hardware Setup