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When you are building a computer from scratch, or upgrading a particularly old computer model, you will have to buy a central processing unit (CPU), otherwise known as a processor or a microprocessor. Many consumers base their choices on the CPU speed alone but there are other factors that affect a CPU’s performance.
Check out these six factors before you purchase your CPU and make a more informed decision.
* CPU speed
Also known as the clock speed, the CPU speed determines the rate at which your computer can run programs. Old CPUs have clock speeds of up to several hundred megahertz (MHz) but today’s fast CPUs have far exceeded those speeds. Now, CPU speeds are usually expressed in gigahertz (GHz). A fast CPU is better than a slow CPU.
* Dual vs. Quad Core
If you run a lot of applications simultaneously, you should consider getting a quad core processor as opposed to a dual core processor. If you are purely into gaming, stick with a dual core processor as most games are not supported by quad core technology. This may change in the future.
* Bandwidth
The bandwidth defines the amount of data your PC can run in one instruction. Bandwidth is measured in bits. Most computers run on 32-bit processors. More modern computers use 64-bit chips. For the moment, some software are only compatible with 32-bit processors. Microsoft’s Windows Vista is an advanced operating system that runs better on 64-bit processors.
* Front Side Bus (FSB) speed
The Front Side Bus permits the relay of information between the CPU and the other parts of the computer. FSB speed is the pace at which data is transmitted between the CPU and the rest of the computer system.
* Level 2 (L2) Cache
CPUs have their own memory — the L2 cache — where data can be stored and accessed immediately. If the L2 cache is full, computers will have to store temporary data in the RAM. The CPU will then need to procure data from the RAM and wait for the data to be transmitted. A large L2 cache is very helpful in running multimedia applications. The L2 cache can be between 128K to 1MB.
* Compatibility
Motherboards only support certain CPUs. Make sure that your CPU is compatible with your motherboard chipset. For example, you need a motherboard with an LGA 775 socket in order to attach an LGA 775 CPU.
Consider these factors carefully when selecting your CPU and choose one that will meet your needs. |