How to Choose a New CPU Processor

The performance of a computer is, to a large degree, dependent upon the speed and capability of its CPU processor. However, overall computer performance also depends upon the amount of memory, whether it has a graphics card, and the provision of enough cooling to keep the CPU below its maximum operating temperature.

What Does a Computer CPU Processor Do?

A computer CPU is like the human brain, in that it controls the PC. In some ways, it's like an enormous calculator, although it also controls computer functions such as accessing internal hard drives, displaying images on the screen, and running programs. Computers need enough memory to handle large files, and this is why the amount of computer memory RAM is important. If there's insufficient RAM, computers use the hard drive to top off the memory and, because hard drives are slower, this slows the computer down.

Main CPU Manufacturers

There are two major suppliers of processors for desktop and laptop computers: Intel and AMD. However, Apple and other companies are now also introducing their own processors. While many people favor Intel processors in the belief that they're faster, this isn't necessarily the case, as AMD processors have similar capabilities. Each manufacturer makes a wide range of CPUs ranging from low-cost, low-performance types up to extremely fast and powerful gaming processors. It's important to consider CPU performance when upgrading your computer.

Comparing the Performance of CPU Processors

The best computer processors are those with high clock speeds and more cores. Clock speed represents how quickly a processor performs calculations, while the number of cores determines the number of processes a CPU can perform simultaneously. The caveat of selecting more cores is that software is written for multiple cores, and if not, there's limited benefit in going from dual or quad core processors to theoretically faster 8-core processors. A better option would be selecting a processor with a higher clock speed.

Computer processors have a maximum operating temperature; when that's reached, they slow down to avoid overheating. That's why it's important to consider fans and CPU coolers for demanding applications such as gaming and video editing.

Matching CPUs to Motherboards

CPU families have certain pin layouts that must match processor sockets installed on motherboards. When upgrading, make certain the processor you're planning to install is supported by your motherboard. Apart from ensuring the socket is the same, also check that the computer BIOS supports the processor. If a motherboard is more than a few years old, it's often better to upgrade both the processor and motherboard.

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