Which processor to choose
Nowadays on the market there are many CPU manufacturers such as Intel, AMD, and in principle, it is possible to mention the VIA Cyrix processors (but this is not the same class). Now before the ordinary user is a question: how to choose the processor - Intel Celeron 2 or AMD Duron, Intel Pentium 3 or AMD Athlon, or in general, buy a Intel Pentium 4 - processor of tomorrow. In fact, many believe that the more expensive the better, but this is not always the case. Tests show that with the same frequency bypasses Duron Celeron 20-30%, but more Celeron. Many users still set themselves Celeron, most likely due to the world-famous name of the company Intel, which has existed for many years. But recently, AMD will melt all known and its processors are becoming increasingly popular, our users are starting to feel the taste of these processors and slowly get used to them. I would advise you to spend $ 500-600 to your computer and buy a processor if the Celeron, then from 533-633 MHz, as these are the models of processors, which in most cases is good or bad overclock. You can buy processors Duron 600-700 MHz (incidentally, the Duron 600 MHz frequency can be overclocked to 1 GHz - he did not try, but familiar to computer scientists were told). As for Athlon and Pentium 3 processors, these processors are overclocked worse than their younger counterparts. VIA Cyrix processors are inferior in performance Celeron 's and the Duron' s, not to mention the Pentium 3 or Athlon. As for overclocking these chips really can not say anything, experiment yourself.
A bit of overclocking
There are two main ways of overclocking the CPU - is increasing FSB (Front Side Bus) CPU and increase CPU clock ratio. The Intel CPU clock ratio sewn processors and using switches on the motherboard or installed in Bios it can not be changed (although there are motherboards that can bypass these problems). FSB - is the frequency of the processor communicate with memory, the standard is 66, 100, 133 MHz. CPU clock ratio - is the factor by which we must multiply the FSB, to get the CPU frequency. Overclocking the CPU - this is the only way to quickly and cheaply to raise performance to the maximum. Many famous testers systems worldwide recommend to overclock the processor, assuring that the proper acceleration life of your friend is not in danger, if you do everything wisely and carefully. The purpose of this article to talk about the basic methods of overclocking Intel Celer on Coppermine 128 processors.
Information about the Celeron
This article Celeron CPU 2 will be described, made 0.18 micron scheme instead Celeron processor circuit made 0.25. Celeron now positioned as a simplified model of the Pentium 3 coppermine. Below, foreseeing the major differences between these processors.
The frequency of system bus (FSB) | |
Celeron | 66 MHz |
Pentium 3 | 100MHz, 133 MHz |
Size L 2 cache |
128 Kb |
256 Kb |
Tests show that with the same frequency of the processor, the Pentium 3 advantage is 15-30%. The main reason for this - low frequency of the processor bus. For the treatment of this disease and this article has been created.
Below you can see a table which lists the main features of Celeron processors:
Processor Speed MHz | The core voltage | S-spec ID BOX for processors |
533A | 1.5 | none |
566 | 1.5 | SL3W7 |
1.7 | SL4NW | |
600 | 1.5 | SL3W8 |
1.7 | SL4NX | |
633 | 1.65 | SL3W9 |
1.7 | SL4NY |
ID S- spec for OEM processors |
Stepping |
CPU ID |
Max. Working CPU temperature, ° C |
Maximum power dissipation processor Watt |
SL46S | cBO | 683 | 90 | 11.2 |
SL46T | cBO | 683 | 90 | 11.9 |
SL4PC | cCO | 686 | 90 | 11.9 |
SL46U | cB0 | 683 | 90 | 12.6 |
SL4PB | cCO | 686 | 90 | 12.6 |
SL3VS | cBO | 683 | 82 | 16.5 |
SL4PA | cCO | 686 | 82 | 16.5 |
* Explanation of the table:
S-Spec - ID that defines the functional, electrical, technological characteristics and the type of packaging a specific instance of the processor. S-Spec ID is applied to the cartridge or the processor housing.
Stepping - revision of the processor core. The difference revision processors suggests differences in their firmware.
CPU ID - the identification code, which stores information about the processor.
It is believed that the most well-clocked models are the Celeron 533A, 566 (MTR), 600 (MTR), 633 (MTR), but personally I am the owner of 600 (CBO) and tell you that this model is not too bad, accelerate, to use some tricks overclocking.
Preparing for overclocking
Cooling
Before you start overclocking should be satisfied in a good cooling of the processor, this may have to replace your standard cooler with a more powerful (suitable cooler Golden Orb, Titan and other. Similar structures). It is advisable before you install the fan on the processor heat sink to clean the surface of the heat-conducting surfaces and smear thermal paste it (it can be bought on the radio market). A layer of thermal paste should be thin, it will fill the air space between the CPU heatsink and fan heatsink, and improve the heat transfer between 1.5-2 times. You also need to will take care of cooling the body, it is desirable to install an additional fan on the front wall of the body at the bottom, so it pumped cold air into the housing and the power supply fan blowing air on the remake. There is a lot to talk about cooling the computer, but it all depends on the structure of the housing, the availability of the ventilation holes and their location, you will have to experiment on before reaching real success. Many companies supply a small package, good cooling in such a case will not achieve.
acceleration
Many motherboards support in the BIOS setup function is not a standard processor bus frequency, for example 66 MHz Celeron is 75, 83, etc. Frequency. Almost all processors operate at a frequency of 75 MHz is stable, but many refuse to run on 83Mgts frequency. This phenomenon is explained by the fact that the standard frequency of 33MHz PCI, that is half the frequency of the bus (66/2) at 75 MHz processor bus frequency, the frequency of PCI 37.5 (75/2), and at 83MGts, PCI 42MGts (83/2 ). Frequency 42MGts not stand the old PCI card and HDD. Bus frequency can also be changed on the mat. board, in most cases it is 100 MHz and 133 MHz, neither encountered on my Celeron based platforms do not withstand the 133 MHz bus, but kept many of 100MHz, some processors can withstand 112MGts (but this is quite dangerous). In most cases, you need to pick up the bus 100MHz CPU core voltage by 10-20% in relation to par.
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