People certainly aren't camping outside stores in the rain to get the latest and greatest desktop computer these days, but PCs are far from dead. Simply put, there are certain functions that mobile devices and laptops either can't do or can't do nearly as well as a desktop.
Not to mention, there's no beating the price. A budget desktop is going to be miles ahead of a budget laptop. It's expensive to make things small. The small size is what appeals to some people when choosing a new computer, but these days big honking towers aren't your only choice.
Styles of desktop computers
There's a lot more variation and choice in the desktop form factor, which is great in some ways, but also makes the buying process that much more complicated. You can find computers in each of these categories at a variety of price points, so the most important thing to keep in mind is how you plan to use your desktop.
Tower
The classic desktop form factor, towers have stuck around for good reason. It's hard to fit a lot of power into smaller devices like a laptop or tablet for a reasonable price. The power to price ratio of tower computers is pretty much unbeatable.
There's also a lot more flexibility with a tower. There's more room to upgrade and expand the system when newer technology comes out, whereas with smaller devices you may just have to buy a whole new system.
Towers do, however, take up quite a bit of space and if space is at a premium in your home, a tower could be out of the question. They also require a separate monitor, keyboard, and mouse. There are some cases where those accessories are included, or you can get a discount if you buy them at the same time as the computer, but plan for buying those when you're making up your budget.
All-in-One
All-in-one computers offer a simple and space-saving set up. These are, in essence, a cross between a desktop and a laptop. They feature a large monitor with all the necessary components built into the back or base.
The small design gives you a lot more flexibility with placement and keeps your work area clutter free. Plus, because everything is all in one, set up usually just involves plugging it in. You do still need a separate keyboard and mouse however.
Because these computers are smaller, they aren't as powerful as a tower and you can't customize and expand them (although this also makes them much simpler). There's also the issue that if the monitor breaks, you need a whole new computer.
Mini and Stick PCs
These computers use mobile components to keep them small (like all-in-ones). As such, they're not very powerful, but they're extremely portable. Mini PCs are small enough to be hidden behind a monitor or TV set up and stick PCs are slightly larger than a thumb drive. Because of the small size, they're not very powerful and internal expansion is limited to impossible.
While you won't be able to do any advanced gaming or multimedia editing, they work great for day-to-day tasks, browsing the Internet, and watching media. Set up is extremely easy and they're quite versatile in that you can use it as a home office during the day, and then plug it into a TV for a home theater at night.
The different operating systems
The question of which operating system (OS) to go with isn't asked as often with desktops as it is with tablets and smartphones, but it's still something to consider.
Windows 10
This is definitely the most common desktop OS so you'll have a big selection of hardware as well as compatible third party software. It's designed around a touchscreen interface, though it still works great with the classic mouse and keyboard, so if you don't buy a touchscreen monitor you won't have any problems.
macOS Sierra
If you're in a family of Apple lovers, then Mac could be for you. Sierra is only found on Mac computers, so you're limited in your hardware, but these are well-made computers that historically have fewer problems with viruses. A Mac will also pair seamlessly with your other Apple devices and programs.
Chrome OS
If you're just looking for simple, no-frills computing the Chrome OS will be right up your ally. The OS runs custom apps and cloud-based programs as opposed to other operating systems that run software. It's not suited for demanding tasks like gaming, but it's great for email, file-sharing, and browsing. You will always need to be connected to the internet, but that's usually not an issue with desktops.
Types of desktop computers
Not everyone is going to use a desktop for the same reasons, and how you use it will influence the type of computer you buy. After all, you don't need a complex, high-powered machine just to check your email.
Business PCs
These PCs are stripped back, no-frills machines that don't allow for advanced computing, but are easy to service and upgrade. They also usually offer extra security, software and hardware certification programs, software support, and some even have on-site tech support.
Workstations
These are specialized PCs that feature multicore processors and intense graphics. They're perfect for scientific calculations, media creation, and other high-powered tasks that wouldn't be even remotely possible on a laptop.
Gaming PCs
These are (as the name suggests) made for gaming. They feature specialized graphics cards, extremely fast multicore processors, and many have flashy design elements although those generally cost more. Upgradability is a must as newer and more immersive games are released.
Learn the lingo
There's a lot of terminology you need to know before buying a PC so that you actually know what you're buying. This list from PCWorld goes into further detail, but here's a quick breakdown of the terms you should know and understand.
Not to mention, there's no beating the price. A budget desktop is going to be miles ahead of a budget laptop. It's expensive to make things small. The small size is what appeals to some people when choosing a new computer, but these days big honking towers aren't your only choice.
Styles of desktop computers
There's a lot more variation and choice in the desktop form factor, which is great in some ways, but also makes the buying process that much more complicated. You can find computers in each of these categories at a variety of price points, so the most important thing to keep in mind is how you plan to use your desktop.
Tower
The classic desktop form factor, towers have stuck around for good reason. It's hard to fit a lot of power into smaller devices like a laptop or tablet for a reasonable price. The power to price ratio of tower computers is pretty much unbeatable.
There's also a lot more flexibility with a tower. There's more room to upgrade and expand the system when newer technology comes out, whereas with smaller devices you may just have to buy a whole new system.
Towers do, however, take up quite a bit of space and if space is at a premium in your home, a tower could be out of the question. They also require a separate monitor, keyboard, and mouse. There are some cases where those accessories are included, or you can get a discount if you buy them at the same time as the computer, but plan for buying those when you're making up your budget.
All-in-One
All-in-one computers offer a simple and space-saving set up. These are, in essence, a cross between a desktop and a laptop. They feature a large monitor with all the necessary components built into the back or base.
The small design gives you a lot more flexibility with placement and keeps your work area clutter free. Plus, because everything is all in one, set up usually just involves plugging it in. You do still need a separate keyboard and mouse however.
Because these computers are smaller, they aren't as powerful as a tower and you can't customize and expand them (although this also makes them much simpler). There's also the issue that if the monitor breaks, you need a whole new computer.
Mini and Stick PCs
These computers use mobile components to keep them small (like all-in-ones). As such, they're not very powerful, but they're extremely portable. Mini PCs are small enough to be hidden behind a monitor or TV set up and stick PCs are slightly larger than a thumb drive. Because of the small size, they're not very powerful and internal expansion is limited to impossible.
While you won't be able to do any advanced gaming or multimedia editing, they work great for day-to-day tasks, browsing the Internet, and watching media. Set up is extremely easy and they're quite versatile in that you can use it as a home office during the day, and then plug it into a TV for a home theater at night.
The different operating systems
The question of which operating system (OS) to go with isn't asked as often with desktops as it is with tablets and smartphones, but it's still something to consider.
Windows 10
This is definitely the most common desktop OS so you'll have a big selection of hardware as well as compatible third party software. It's designed around a touchscreen interface, though it still works great with the classic mouse and keyboard, so if you don't buy a touchscreen monitor you won't have any problems.
macOS Sierra
If you're in a family of Apple lovers, then Mac could be for you. Sierra is only found on Mac computers, so you're limited in your hardware, but these are well-made computers that historically have fewer problems with viruses. A Mac will also pair seamlessly with your other Apple devices and programs.
Chrome OS
If you're just looking for simple, no-frills computing the Chrome OS will be right up your ally. The OS runs custom apps and cloud-based programs as opposed to other operating systems that run software. It's not suited for demanding tasks like gaming, but it's great for email, file-sharing, and browsing. You will always need to be connected to the internet, but that's usually not an issue with desktops.
Types of desktop computers
Not everyone is going to use a desktop for the same reasons, and how you use it will influence the type of computer you buy. After all, you don't need a complex, high-powered machine just to check your email.
Business PCs
These PCs are stripped back, no-frills machines that don't allow for advanced computing, but are easy to service and upgrade. They also usually offer extra security, software and hardware certification programs, software support, and some even have on-site tech support.
Workstations
These are specialized PCs that feature multicore processors and intense graphics. They're perfect for scientific calculations, media creation, and other high-powered tasks that wouldn't be even remotely possible on a laptop.
Gaming PCs
These are (as the name suggests) made for gaming. They feature specialized graphics cards, extremely fast multicore processors, and many have flashy design elements although those generally cost more. Upgradability is a must as newer and more immersive games are released.
Learn the lingo
There's a lot of terminology you need to know before buying a PC so that you actually know what you're buying. This list from PCWorld goes into further detail, but here's a quick breakdown of the terms you should know and understand.