Graphics cards
If a laptop has a graphics card, it is often combined with the motherboard and does not act on its own. These cards have more power than integrated options. Unlike desktops, however, all-in-one PCs are not easy to crack open and upgrade their parts. Sometimes, you cannot upgrade all-in-ones at all.
For tasks like data entry, and checking email, an integrated graphics card will do the job. You might not even need a graphics card. If you use streaming services or video-conference with clients, consider a PC with an independent card.
Hard drives
It is common for laptops to have disk speeds of 5,200 RPM, while most desktops have at least 7,200 RPM. Even more significant is the amount of power the drives use. Individuals who primarily use their computers for document setting may do well with a laptop-style hard drive that saves energy. Gamers may prefer a hard drive built for desktops, as they perform better when running complex programs.
Solid State Drives (SSDs) are a newer type of hard drive available for both laptops and desktops. These drives are quieter and more durable than other hard drives because they have fewer moving parts.
Random access memory (RAM)
Computers use Synchronous Dynamic RAM, so named because the RAM synchronizes with the CPU. The RAM is dynamic because it refreshes at regular intervals. Desktops connect RAM to the CPU using pins on a dual in-line memory module (DIMMS). Laptops use small outline DIMMS (SODIMMS). The only real difference between the two are their physical sizes.
When looking at RAM, you may also see a reference to DDR, DDR2, DDR3 or DDR4. DDR stands for Dual Data Rate. DDR DIMMS improves performance by using both parts of a computer’s clock cycle. DDR4 rated RAM sets are the most efficient and use the least amount of power.
8 GB of RAM is enough for most people. High-end users may opt for a computer with 16 GB of RAM. The good news is that RAM is one of the few internal components you can readily change in most all-in-one computers. If you are uncertain, start with 8 GB and upgrade from there as needed.
Display resolution and size
The most common resolution options for all-in-one PCs are 1080p Full HD (1920 x 1080) and 2130p 4K Ultra HD (3840 x 2160). You can play a 4K video on a Full HD screen, but the computer will render it as a 1080p video. 1080p provides beautiful full-color images but is not as crisp as 2160p.
Screen size is a matter of preference more than anything else. All-in-one display sizes commonly range from 20 to 32 inches. 20 to 23-inch monitors are great for fitting into tight cubicle spaces. 24 to 28-inch displays are large enough to satisfy most needs. 30 to 32-inch screens are also available if you have the money and space to spare.
Processors
People who use their computers for art and those accustomed to using their touchscreen-enabled phones displays may enjoyall-in-one PCs with touchscreens. Resistive Touch, Surface Capacitive and Projected Capacitive are the three most common types of touch screen technology. You can activate resistive displays with almost anything. Surface Capacitive monitors activate with fingers only and only detect single-finger motions.
Ergonomic design
You cannot adjust the height of most all-in-one computer displays. Make sure you are comfortable with the design before making your purchase, especially if you plan to spend a significant amount of time in front of the screen.
Number of ports and port locations
You only need enough ports to accommodate the number of devices you plan to use at once. Most people only need three. One for the mouse, one for the keyboard and one more for external devices like a headset or printer. It is also important to consider the location of the ports.