If you mean CPU as Central Processing Unit, then theres one mounted onto the CPU. If you mean CPU for Computer, then theres at least two or three in the computer. Theres one on the central processing unit, one in the power supply box, and one on the computers case. There may be more added on other places of the computer's case.
4 pins
ceiling mounted, inline and wall mounted (external) ventilation fans
Tower monolithic coolers (the ones that mount the fan perpendicular to the CPU) are typically far more effective than flat-mount coolers that blow downwards at the CPU. However, to accomplish effective cooling, you'll need a separate case intake fan to draw in cold air from outside the case. These usually take the form of a case front-mounted intake fan and possible another side panel mounted intake fan. Lastly, you'll need a rear case mounted exhause fan. Always mount tower cooler fans so they blow towards the rear exhaust fan, NOT towards the front of the case.
the motherboard? :S
to reduce the heat. its acts as a coolant
All CPU cooling fans will come with installation instruction. It's a bit challenging, but a novice certainly can do it.
There are a few kinds of bathroom ventilation fans. Types include: ceiling mounted, inline and wall mounted (external) ventilation fans. Companies making them include Panasonic,Dundas Jafine, Delta Co.
VGA ( Video Card ) CPU
The Processor (CPU)
Hi, the Vostro 220 minitower includes two fans which are the cpu and system fan.
Several parts of a computer can have a fan attached. The most common ones are the CPU and the fan inside the power supply. There are also fans mounted in most desktop cases, and some newer video cards require a fan.
Mostly it builds up on the fans and prevents the system from cooling and will lead to shut downs or unpredictable behavior. Using "dust off" or any other compressed air can you can blow the dust out of all of the fans including any fans on the video card if there is one. There are several fans in a normal computer including, CPU fan mounted on the actual CPU case fans mounted on the case (could be severel here too) video card fans are mounted on the video card itself and can be hard to reach(not all video cards have fans mostly just the top end cards) Also dust can acumulate on your CD roms optics and will prevent the reading of CD's, any standard CD ROM drive cleaner will work to clean it or you can use a que tip with rubbing alcohol to clean it directly.