Desktop computers (1)

A desktop computer is a type of personal computer that can be used only at a single location. It is placed on the table or a desk that is why it is termed as a desktop computer. Power requirements and size do not allow it to move from place to place. Input and output components are not integrated into a single base unit and require a case with multiple ports.


It does not have a single-body configuration. It mainly comprises a screen known as “monitor” and a tower known as “central processing unit CPU”. CPU houses

  • motherboard
  • power supply
  • the printed circuit board
  • Microprocessor
  • bus
  • memory
  • storage devices
  • Ports for output components
  • Ports for input components

The tower or CPU may be vertical or horizontal oriented that can be placed on top, beside, or underneath the desk or table. It is typically made up of aluminum, or steel, or sometimes plastic as well.

Functions of components


It receives the raw data information and converts it into binary codes. These binary codes are then processed and shown on the monitor screen in the user language.


It encloses all the essential and sensitive electronic components and protects them from external harm.


It is a programmable device that receives the data from the user, stores it, and then gives output after processing it. Some commercially available microprocessors are a dual-core processor, core 2 DUO processor, core i3 processor, core i5 processor, core i7 processor.


It is a board with a printed circuit on it. It acts as a platform for the connection of all computer components (hard disk, microprocessor, disk drives).


Random-access memory is a temporary storage device. It stores data as long as it is provided with the power supply.

Hard Disk

It is a permanent storage device. The data stored in hard disk remains save even when the power supply is cut off.


Switch Mode Power Supply SMPS switches AC power to DC power and then supplies it to all the components of the desktop computer.

Advantages of desktop computers.

  • Extensions and spare parts tend to b formalized, which results in greater availability and lower prices. For example, motherboard mounting has been standardized into BTX, microATX, ATX, or other form factors.
  • Unlike laptops, desktop computers have expansion slots such as PCI Express or conventional PCI.
  • Procedures for desktop’s assembly and disassembly are standardized and simple.
  • The configuration of desktop computers especially towers case can be tailored and upgraded to an advanced level. This customization facility makes the tower case popular among enthusiasts and gamers.
  • Power consumption in desktop computers is not as crucial as in laptops. Desktop computers run through a direct supply of electricity. So it eliminates the battery issues that normally occur in laptops.
  • Desktop computers provide more space for vents and cooling fans, which allow continuous heat filtration.

Types of desktop computer

  1. Full-sized desktops

They are characterized by distinct processing and monitoring components. Connections between these components are held through wireless connections or cables. They are easy to upgrade and customize according to the requirements.

  1. All in one desktop

They enclose all the internal components of the system in the same display case. Unlike desktops with tower cases, these desktops usually occupy less space. They were popular in the early 1980s for professional purposes such as Compaq portable, TRS 80 Model II, Osborne I, and Kaypro II. Like laptops, these desktops also cannot customize and upgrade, as the case form does not allow convenient access to internal components.

  1. Compact desktops

Comparative to full-size desktops, compact desktops have reduced physical volume. They are usually low-power, inexpensive, and small-sized computers. They are tailored to perform basic tasks such as video/audio playback, document processing, accessing web-based applications, and web browsing. Reduced processing power and hardware specifications make them less suitable to run resource-intensive and complex applications. An example includes Nettop.

  1. Home theatre

They are connected to entertainment systems at home and intended for enjoyment purposes.  They have good sound, video graphics, high definition display, and TV tuner systems.

Top-rated brands of desktop computers. (2)

  • Dell XPS desktop 8940

It possesses a 10th generation Intel Core i3 processor with 1TB storage and 8GB RAM. It offers plenty of ports by the computer such as

  • USB 3.1 port
  • USB-C port
  • Ethernet port
  • Display port

It scored 7.6/10 on the top ten reviews from PCGamer.


  • Sleek design
  • Plenty of ports
  • Inexpensive


  • Substandard graphic performance


The current price of Dell XPS 8940 is $599.99

  • Alienware Aurora R11

If the user is looking for a workhorse, then Alienware Aurora R11 is considered the best of all. Its top-end performance supports all types of gaming formats. Along with the 10th generation Intel Core i5 processor, 1Tb hard drive, 8GB RAM, it also offers NvidiaGeForce GTX 1650 graphic card. LifeWild honored it with the title of Best gaming PC and also it got excellent reviews fromPCMag.


  • Very powerful
  • Plenty of ports
  • Cool design


  • Expensive


Its current price is $889.99.

  • Apple iMac

It is the best-selected desktop for those who enjoy the Apple ecosystem. It is an all-in-one desktop that means it has a built-in display system and does not require an external monitor. It is available in two sizes. Due to size their specs are not the same but still possess a high-powered working capacity.It comes with a 7th generation Intel Core i5 processor, 256GB solid-state drive, and 8GB RAM. It also offers the Radeon Pro 5700 XT graphic card. It has gotten excellent reviews from PCMag(4/5) and Wired (8/10).


  • All-in-one format
  • High-powered
  • Solid port selection
  • Multiple configurations


  • High needs to upgrade
  • Aging design


The current price of the Apple iMac is $1099.