With processors becoming more sophisticated, they’ve increased in the number of transistors integrated in them. Additional transistors means extra current going in them, and additional heat is produced. Today’s processors need active coolers. Previous processors used passive coolers, and even older ones didn’t even need cooling.

With the number of transistors integrated in processors is very high, cooling is crucial fro the health of the processor.

A thing that helps keeping processors running is the continually shrinking die processes used by chip producers. The process shows the spacing and the size of the part on a chip. For an eg. of how quickly chips are shrinking, consider that in 1990 many processors were build on a 1-micron die. Today’s P4s are built on a 0.13-micron die. The smaller the process a processor is built on, the less amount of heat it produces.

So the heat is balanced as the die shrinks, the additional transistors are included in a chip. Additional transistors make a hotter chip and smaller processes run cooler.

One needs an active heat sink on the processor. If one purchases it in a retail kit, instead of a white box, he or she may get a correct cooler right for that price. However, if one buys cheaper by getting an original equipment manufacturer processor, he or she will be required to purchase his or her own cooler.

At present, Athlons and P4s need various coolers. Athlon coolers fasten to little hooks right on the slot, whereas P4 coolers fasten to the motherboard from a housing that surrounds the slot.

Cooler has a big heatsink, generally aluminum or copper or a mix thereof, with fins or pillars created to additional heat from whatever it’s connected to. It will have a fan hooked to the heat sink, to help speed the heat wastage. It’ll also come with mounting hardware. A lot of coolers come with a strip of thermal tape or a small amount of thermal paste, which is essential to make sure good contact between the cooler and the CPU, as every one might have imperfection on its surfaces that, on a microscopic level, keeps it from being completely flat.

Coolers can be bought from any PC shop or from any cooling-dedicated sites. Brands like Thermaltake and Alpha make very good active coolers, and some of their wares have nifty-colored LEDs. Ensure that the cooler is rated for the clock frequency of the CPU.

One might even need thermal paste if it isn’t included in the unit. Few coolers include thermal tape set to the area of the heat sink that makes contact with the processor. If not, thermal compound like Arctic Silver III available at the web sites will be required. Thermal compound or tape is essential for foster good contact between the heat sink and the CPU, which in turn make sure that the cooler blows heat out from the CPU

Coolers are necessity without proper cooling the CPU won’t run properly. A good cooler is not optional. Never run a computer without an active cooler inside the CPU. Even few seconds are sufficient for the system to roast itself.

For hardcore, there are options to simple air/heat sink cooling. One can opt for water cooling kits, which run water from a reservoir via a radiator and then from a block hooked to a processor. Some might even use Peltier elements, which are flat, electronic elements that pull heat from one side and throw it from the other side. Such coolers are used majorly for overclocking the processor.