Performance Bottlenecks: The Types and Their Causes

Modern personal computers are incredibly powerful. Most of them have gobs of memory, excellent graphics processors, multi-core CPUs, as well as large solid-state drives. The funny thing is that some of these computers are still bottlenecked. This could occur due to lack of sufficient memory, horsepower, or speedy storage.

In most cases, the restraining factors depend on the use the system is being put into as well as the system configuration. The place where a person is operating a computer can have an effect on its general performance. Would you want to know what your PC’s performance bottleneck could be? If yes, click here.

Central Processing Unit (CPU)

You know what? CPU is actually the brain of any computer. It is where the instructions, as well as calculations operations, occur. Modern Central Processing Units can handle several (millions) instructions and calculations. However, the performance can slow down when the number of instructions and calculation exceeds the capacity. To avoid this problem, do not feed your computer with so many instructions at the same time. Consider the capacity of your CPU before using it.


The storage type, RAID type, Disk speed as well as controller technology combine, to form disk I/O. You should know that disk I/O is a common cause of performance bottleneck. There are physical as well as practical limits to the general performance of a system even when using the most appropriate contemporary disk technology. It is always important to use the right practices when separating and combining workloads on disks.


Limited memory is another common cause of performance bottleneck. This problem can be solved by adding more. However, this is just a short-term solution. Most of the performance problems that manifest as memory problems are actually caused by poorly designed software and other related system flaws. Before you start solving memory performance challenges, find out what its main cause is, before having additional RAM.

Network and Applications

Although the network is one of the most commonly blamed causes of performance bottlenecks, it is a rare source. It can only happen if there is a hardware failure like bad cable, damaged switch port, router configuration problem, or jabbering network card. If none of these hardware components has a problem, know that there is nothing wrong with the network. Poorly coded applications manifest themselves as hardware hitches. A problem involving an application can be best solved by contacting the developer.


Trojan horses, viruses as well as spyware are the main sources of the performance bottleneck. You may think that the cause of a problem is the application, computer, or network when the cause is actually viruses. They usually reside on either user’s workstation or sever systems. Antivirus, local firewalls, antispyware, as well as network firewalls can help you protect the system of your computer.


If you are not able to detect which performance bottleneck is undermining the performance of your computer, consider hiring an expert. This will help you save time and cost. If you try to repair a problem you have never handled before, you are likely to make the problem worse.