Cpu Installation With Socket 478B; 2-1.1 To Identify A Pentium 4 Cpu - SOLTEK SL-PT880E-R Manual

2-1 CPU Installation with Socket 478B

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 :
The new P4 processors at 2.40C, 2.60C, 2.80C, 3, 3.20GHz with an
advanced 800MHz system bus and P4 processor at 3.06Ghz with
533MHz system bus all support Hyper Threading Technology.
(Hyper-Threading CPU included)
3) System Bus
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Chapter 2 Hardware Setup