Cooling Your Computer With Air

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Cooling Your Computer With Air Is  less expensive then liquid cooling For lower end systems this is the ticket.

Computer cooling is required to remove the waste heat produced by computer components, to keep components within their safe operating temperature limits. Varied cooling methods are used to either achieve greater processor performance or to reduce the noise caused by cooling fans.
Components which produce heat and are susceptible to performance loss and damage include integrated circuits such as CPUs, chipset and graphics cards, along with hard drives (though excessive cooling of hard drives has been found to have negative effects). Overheated parts fail early and may give sporadic problems resulting in system freezes or crashes.
Both integral and peripheral means are used to keep the temperature of each component at a safe level. With regard to integral means, CPU and GPUs are designed with energy efficiency, including heat dissipation, in mind; though improved efficiency may only allow increased performance instead of reduced heat. Peripheral means include heat sinks to increase the surface area which dissipates heat, fans to speed up the exchange of air heated by the computer parts for cooler ambient air, and in some cases softcooling, the throttling of computer parts in order to decrease heat generation.
Thermal sensors  in some CPUs and GPUs can shut down the computer when high temperatures are detected. However, reliance on such measures may not prevent repeated incidents from permanently damaging the integrated circuit.
An integrated circuit may also shut down parts of the circuit when it is idling, or to scale back the clock speed under low workloads or high temperatures, with the goal of reducing both power use and heat generation.
As a safety measure, many computers are designed to turn themselves off if the internal temperature exceeds a certain point. Alternatively, some have an option in their BIOS that allows the user to determine if the system emits an alarm beep or shuts itself down when the core temperature reaches the level set by the user. However, setting this incorrectly can result in hardware damage or erratic system behavior.
The amount of heat generated by an integrated circuit (e.g., a CPU or GPU), the prime cause of heat build up in modern computers, is a function of the efficiency of its design, the technology used in its construction and the frequency and voltage at which it operates.
The dust on the laptop CPU heat sink after three years of use has made the laptop unusable due to frequent thermal shutdowns.
In operation, the temperature of a computer's components will rise until the heat lost to the surroundings is equal to the heat produced by the component, and thus the temperature of the component reaches equilibrium.
For reliable operation, the equilibrium temperature must be sufficiently low for the structure of the computer's circuits to survive.
The peration of cooling methods can be hindered by causes such as:

    * Dust acting as a thermal insulator and impeding airflow, thereby reducing heat sink and fan performance.
    * Poor airflow including turbulence due to friction against impeding components, or improper orientation of fans, can reduce the amount of air flowing through a case and even create localised whirlpools of hot air in the case.
    * Poor heat transfer due to a lack of, or poor application of thermal compounds.
Thermal sensors  in some CPUs and GPUs can shut down the computer when high temperatures are detected. However, reliance on such measures may not prevent repeated incidents from permanently damaging the integrated circuit.
An integrated circuit may also shut down parts of the circuit when it is idling, or to scale back the clock speed under low workloads or high temperatures, with the goal of reducing both power use and heat generation.
Fans are most commonly used for air cooling. A computer fan may be attached to the computer case, or attached to a CPU, GPU, chipset, PSU, hard drive or PCI  slot. Common fan sizes include 40, 60, 80, 92, 120, and 140 mm. Recently, 200mm fans have begun to creep into the performance market, as well as even larger sizes such as 230 and 240mm.