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What is the overclocking?


Risks of the overclocking

How does a mike work

Possibilities for the overclocking

Some recommendations

How much can overclockearse a mike?

The refrigeration

Refrigeration for software

A small practical example

Conclusion

Updated page
6/18/2001


Author:
Juan Herrerías Rey
 

What is... the microprocessor?


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The overclocking of the microprocessor



His publicity in CsH

 

Fan, spendthrift and cell Peltier to refresh the mike overclockeado

All the fanatics of the games (yes, go for you!!) we have met one day the sad reality of which the computer market advances at a horrifying speed; there comes a moment in which this computer that we buy does so little, wearing out almost all our savings, it is insufficient to cover the games of last batch. Sometimes it is a question that would be solved by a few MHz more, but to buy a new microprocessor (what sometimes also bears to change the motherboard) is done to us much costs above. In this case, we can try to obtain these MHz extra free, by means of the practice of the overclocking.

 

What is the overclocking?

The word overclocking alludes to raise the speed of clock of something over the face-value; for example, to make work a microprocessor that they have sold to us like "of 300 MHz" at a 333 MHz speed. Obviously, this produces an increase in the services, although also it can imply relatively serious certain risks for the team, especially if we do not know well what we are doing.

Many people will wonder how this "magic" is possible of accelerating the speed of something over theoretically correct. The motive is that all the electronic devices are constructed by a few certain safety margins as for his working conditions. In the concrete case of the microprocessors, which will belong to those whom we will treat in this article, one can affirm that in general lines all the microprocessors of the same scale are constructed being based on an identical design, and only later they qualify and mark as of a certain speed.

How?!! What Intel us does it cheat? Is it that the Pentium MMX of 233 MHz that I bought the most expensive is identical to other of 166 MHz that they were selling? No, it is not that either. Simply, although these two mikes share an identical design, Intel makes sure us that the 233 MHz model can support the above mentioned speed to the perfection, while he does not become a person in charge of that the 166 MHz model tolerates anything over the above mentioned speed. But the reality is that perhaps it is possible that yes he supports more, and on this possibility we will base our efforts.

 

Risks of the overclocking

Before getting into task, we are going to exhibit the risks; since it usually say, "the one that it warns is not a traitor".

The proper nature of the overclocking does that we are making a few devices work, generally the mike, over his specifications; this supposes several things:

  • Nobody assures to him that they should be going to work (just in case, I am the first one who did not insure it himself).
  • We might damage the above mentioned devices.
  • The guarantee does not cover this type of practices.

One of the principal problems takes root in that when an electronic component works at a higher speed, it produces a higher heat quantity. This heat can damage to the component of diverse forms, from shortening his useful life (for a physical effect called "electromigración") even simply to fry it, happening for the most habitual case: that works, but not of stable form. We will treat this topic more thoroughly later.

In any case, the risk is minimal if one proceeds with prudence, following the steps with attention and realizing the tests little by little. For example, nothing of to start by a 100 MHz "subidón", better first a little, then another little any more, then another little... and between test and test, to verify the stability of the system, the heat generation, etc.

And since we have commented, the achievement of these practices implies the loss of the guarantee of the product, which is logical from the point of view of the manufacturer and for nothing censurable; it exists very much crazy round there I release that first it fries the mike of an unconscious way and then he wants that they give him the new one to keep on playing. As in almost quite in the life, the difference between the success and the defeat takes root in knowing well what is done... and in a little being lucky.

 

How does a mike work

From now on we are going to center on the possibilities that exist to accelerate the speed of the mike, for which inexcusably we must tell a little how these aparatitos work.

Configuration of a mike by means of the BIOS

The microprocessor, also called "the CPU", is the brain of the computer. It is the most versatile chip, which one entrusts of most of the calculations and, generally, the most rapid. Obviously, major all that is the speed to which a chip must work, more difficult and expensive will be to make it; for it, the mike works at a speed that is a multiple one of that of the motherboard, so that other components (the chipset of the motherboard, the memory, the cards of expansion...) can support a much more exact price and be used by many different mikes, in spite of the fact that only these multipliers fit.

Therefore, the mike works at two speeds, an intern and another day pupil or of communication with the motherboard (that of the called bus of system, day pupil, of memory, or "Federal Security Service" in Pentium II - III and similar). This way, while the motherboard works for example to 66 MHz, the mike will work to 200 MHz by means of the use of a multiplier 3x, or to 233 MHz by means of one 3,5x.

 


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