CPU-Z Can't Record Correct Cpu Speed ?

[Troop]

I run the Intel Pentium 4 660 3.6 GHz ( 800 MHz ) - L2 2 MB and CPU Z appears to get the wrong speed. The .txt dump shows:

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CPU-Z version 1.32
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CPUID Output
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Number of CPUs 2 (1 Physical)

CPU #1
APIC ID 0
Name Intel Pentium 4 660
Code name Prescott
Specification Intel(R) Pentium(R) 4 CPU 3.60GHz
Family/Model/Stepping F43
Extended Family/Model 0/0
Package LGA775
Core Stepping N0
Technology 90nm
Instructions Sets MMX, SSE, SSE2, SSE3, EM64T
Features
Clock Speed 2809.8 MHz
Clock multiplier x14.0
Front Side Bus Frequency 200.7 MHz
Bus Speed 802.8 MHz
Stock frequency 3600 MHz
L1 Data Cache 16 KBytes, 8-way set associative, 64 Bytes line size
L1 Trace Cache 12 Kµops, 8-way set associative
L2 Cache 2048 KBytes, 8-way set associative, 64 Bytes line size
L2 Speed 2809.8 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 256 bits



The Clock Speed 2809 and Clock multiplier x14.0 appear wrong tho the stock freq is correct. Can any shed some light on this report ?

Thx,

[3 of 7]

First found on Intel's mobile Pentium M processors, SpeedStep scales frequency and voltage according to CPU load.

SpeedStep underclocks your CPU when you're surfing the internet and runs at rated frequencies under CPU-intensive applications, like video encoding.

There are three new mechanisms contributing to Enhanced power management; Enhanced Halt State (C1E), Thermal Monitor 2 (TM2) and EIST. All these mechanisms make use of lowering of multiplier and voltages to reduce dynamic power consumption and lower leakage.

C1E is activated via Halt (idle) instruction execution and is different to the current C1 halt state (90% of clocks are stopped, 10% run at full speed) as it will also reduce frequency and voltage to the lowest multiplier possible, in this case 14x on the Prescott 2M core

Link

[h20-ski]

3 of 7 nailed it right on. It is Intel's way of saying that they don't have power hungry processors. What you can do to verify that it will run at 3.6 is to run a CPU intensive program ie, anit-virus scan, prime 95 or any program that you know will run the CPU at 100%

[Troop]

thx very much--very cool