Analysis on the principle of overclocking software

Article Summary:

At present, the major motherboard vendors use overclocking software is based on the frequency generator This hardware implementation, and most of the frequency generator is a I2C bus equipment, this article introduces the basic principles of I2C equipment and overclocking the fundamental methods and principles.

Key words: I2C, frequency generator, byte read-write, block read-write

Over-clock Basic theory

Luo XI, Zhang Hong-wei

518027 r&d Department qdi Business Legend (Shenzhen) Electrolic Inc.

ABSTRACT:

Almost the Over-clock software provided by Mainboard Manufactory are based on the clock generator which is the basic ha Rdware on mainboard. And almost all clock generators are I2C devices. This document focus is on how the I2C device works and the basic theory of Over-clock software.

Key words:i2c, Clock Generator, Byte read/write, Block Read/write

With the rapid development of computer, more and more DIY want to play more fully the performance of computer and its parts, "squeeze" the resources of various equipments including CPU. In this case, the motherboard manufacturers to provide overclocking software has emerged. These applications include Lenovo Qdi's Stepeasy (overclocking shuttle), Gigabyte Easytune, MSI's Fuzzy Logic, and the Red Storm of the Shuo Tai. This article will be in this regard with their own practical experience in this area, Introduction overclocking software implementation principle.

1. Objective

In fact, all overclocking software overclocking implementation is inseparable from the frequency generator hardware support, that is, overclocking is actually the frequency generator (clock generator) output of the basic FSB to overclocking. If CPU frequency is 800 trillion, namely FSB is 100 trillion, double frequency is 8 times times, its FSB is actually determined by frequency generator's output frequency. When using the software to operate the frequency generator to change its output frequency to 105 trillion, the CPU's internal frequency will run at 105 Times 8, that is, 840 megabytes of frequency, so that the use of overclocking CPU to achieve the purpose.

The current motherboard uses the frequency generator main supplier has cypress, ics,winbond,phaselink and so on, but these manufacturers produce the frequency generator to have the support software to change the output frequency, also has not supported. So overclocking software must be based on a frequency generator that can change the output frequency using the software.

Most of the frequency generators on the motherboard are I2C bus to communicate with other motherboard devices, that is, the frequency generator is a I2C device, to understand the basic principle of overclocking must first understand the basic principles of the I2C bus.

2. Basic principle of I2C bus

I2C (inter-integrated circuit) bus is a serial bus developed by Philips, originated in the 80 's, originally developed for audio and video equipment, and is now widely used in microelectronics communication control, consumer electronics, communication and other fields.