To check the CPU speed, you start by clicking on the "Start" menu, then right-click on "My Computer" until you find "System properties" and click on that. Once you have selected System Properties, you must click on the "General" tab, and the speed of the CPU should be located on the first or second line.
a CPU can carry out one thousands instructions.
A CPU is also known as a computers central processing unit. There are some programs one could run to test the speed of ones CPU. Softpedia offers CPU Speed Professional for free. As well, Speed Test offers a free version as well as a paid version with good ratings.
One may find more information on CPU charts by using the website "CPU Benchmark". They also provide some benchmark analysis comparing Intel and AMD CPUs.
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A mock test does not carry marks. It prepares one to be ready for an actual test.
The CPU is the 'brain' of the computer. It is where all the searching, sorting, calculating and decision making takes place. The CPU contains a tiny quartz clock. Each time this clock 'ticks', one instruction can be dealt with by the CPU. So the more times this clock ticks per second, the more instructions the CPU can carry out and the faster things get done. The speed of the CPU is measured in either Megaherts (MHz) or more commonly now in Gigahertz (GHz). A 1 MHz CPU can carry out one million instructions per second. A 1 GHz CPU can carry out 1 billion instructions per second! A typical CPU installed in a computer today would run at around 3 GHz.
To find a list of microprocessors online one can try Wikipedia. Other online sites that would be helpful are: CPU Data, CPU World, Bookrags and Princeton.
Inside the computer, you will find a fan and heatsink assembly clamped on or screwed down. Indeed there may be many of these, but the largest one on your motherboard is most likely the CPU cooler. Under that heatsink is your CPU. Note: If you plan to open up your computer & find the CPU bear a few things in mind. 1. Never open up a computer that's plugged in. 2. Be very careful when removing the CPU heatsink, some clips are very tempermental and you may damage the heatsink CPU or motherboard if you slip.
If the fan is spinning then the problematic parts are either the CPU or Motherboard. One way to test is to put the CPU on a good motherboard, and put a good CPU on the trouble PC's motherboard. This will eliminate the part you need to fix your PC. Then replace the broken part with a new one.
One of your ventilators is likely clogged. Download a tool to monitor the CPU and computer case temperature, like this [http://www.hardwaresecrets.com/page/download_overclock] or this [http://www.almico.com/speedfan.php one]. The case temperature (the lower of the two measured temperatures) shouldn't be above 40 C, the max CPU temperature for your CPU, you can find on the following page: http://www.hardwaresecrets.com/article/143/5 (click "Next" until you find your CPU type). What kind of CPU is in your computer, you can find out by opening the "Control Panel" -> "System" -> Tab "General" -> Subsection "Computer:" in Windows XP.
If you have a set computer brand in mind and know the price range of what you want to spend, you can find reviews on Newegg. Many customers leave reviews where they leave an opinion if they know of a faster CPU.
Quite simple find out what socket your previous cpu is, buy one that fits your motherboard. To install, remove fan/heat sink. Then remove old cpu, replace it and apply thermal grease, put the fan/heat sink in position and its done.