Buying computer hardware: how to choose a PC, laptop or component that’s right for you

Buying computer hardware seems straightforward until you compare specifications, connections and upgrade options. For example, a fast processor doesn’t mean much if the laptop has only 8 GB of RAM, while a powerful graphics card may not fit in a compact case. You may also find out about accessories and compatibility only after buying.

Use this practical guide to focus on the things that make the biggest difference for gaming, working from home, business use and upgrades.

Common pitfalls when buying computer hardware

1. Focusing only on the processor name

An Intel Core Ultra processor or AMD Ryzen chip sounds appealing, but the overall configuration determines your experience. So check:

• The number of cores and maximum clock speed.
• The amount of RAM and its type.
• Whether it has an SSD rather than just a traditional hard drive.
• Whether the computer has a dedicated graphics card or only integrated graphics.

A mini PC with a powerful processor may be suitable for office work, but that doesn’t automatically make it suitable for modern games. A gaming laptop with an RTX 5060 laptop GPU looks more promising for graphics-intensive tasks, but TGP, cooling and the screen are still important.

2. Buying RAM without checking the connection

Laptop RAM usually uses a SO-DIMM format, while desktop RAM needs a DIMM module. DDR5 memory also won’t work in a DDR4 motherboard. Before buying, check:

• DDR generation: DDR4 or DDR5.
• Format: SO-DIMM for laptops and some mini PCs; DIMM for desktop PCs.
• The system’s maximum memory capacity.
• Supported speed, such as 4800 MT/s or 5600 MT/s.
• Number of available memory slots.

For example, a Kingston FURY 16GB DDR5 kit with 2 x 8 GB is designed for laptops because of its SO-DIMM format. The Crucial CT16G48C40U5, on the other hand, is a 16 GB desktop module in DIMM format. These products aren’t interchangeable.

3. Hidden costs and missing accessories

Some desktop computers and laptops state in their product information that the charger must be bought separately. Check this before you reach the checkout. Also look at:

• Keyboard layout, such as QWERTY or another configuration.
• Included power supply and the wattage required.
• Windows 11 Home or Windows 11 Pro.
• Warranty and statutory conformity.
• Available connections for monitors and accessories.

In the EU, consumers are generally entitled to a minimum of two years’ statutory guarantee. This is separate from any additional manufacturer’s warranty.

Important specifications explained

Processor, RAM and storage

For everyday office work, browsing and video calls, 16 GB of RAM is a practical starting point. For photo editing, virtual machines and heavy multitasking, 32 GB or more may be a better fit. DDR5 RAM is a newer generation of memory, but always check that your motherboard and processor support it.

An SSD generally means shorter start-up and loading times. 512 GB is enough for office software and documents, but gamers and creative users will fill it up more quickly. A 1TB SSD gives you more room for games, video files and projects.

Graphics card and screen

Integrated graphics are often enough for basic productivity. For gaming, 3D software and video editing, a dedicated graphics card is more relevant. With an RTX 5060 laptop, don’t just look at the name. Check:

• The available video memory.
• The maximum TGP.
• Screen resolution and refresh rate.
• Cooling and ventilation.
• Connections such as HDMI and USB-C.

An RTX 5080 graphics card also requires you to consider its size, power supply and case. According to the product specifications, the Gigabyte version in this selection is 340 mm long, uses 360 W of power and requires a recommended power supply of at least 850 W. So check the space in your case and the power connectors available first.

Upgrade options and connections

A system you can upgrade later can help you avoid replacing it too soon. Check the number of RAM slots, M.2 slots, PCIe slots and video outputs. For example, the Lenovo ThinkCentre M70q Gen 5 has two DIMM slots and two M.2 slots, while the Dell Pro QCS1250 supports up to 64 GB of DDR5.

For a workstation with multiple screens, DisplayPort, HDMI and USB-C with DisplayPort functionality are useful. Wi-Fi 6E and Bluetooth 5.3 can come in handy if you work wirelessly, but a wired Ethernet connection is still useful for fixed workstations and online gaming.

Product choices by user profile

Suitable for: Budget-conscious beginners

Lenovo V15 G5 IRL 15.6" FHD Laptop

Why it suits this profile: This business laptop combines an Intel Core i5-13420H, 16 GB DDR5 and a 512 GB PCIe NVMe SSD for documents, video calls and everyday working from home.

How this product avoids the pitfall

The key specifications are clearly listed: 16 GB RAM, a 512 GB SSD and Windows 11 Pro. Do check the English keyboard layout.

Key benefit & highlights

15.6-inch Full HD screen, Wi-Fi 6, gigabit Ethernet and a weight from around 1.61 kg.

Suitable for: Buyers looking for premium quality

Lenovo ThinkBook 16 G8 IAL

Why it suits this profile: A business laptop for professionals who want a large 16-inch workspace, Windows 11 Pro and upgradeable memory.

How this product avoids the pitfall

According to the product specifications, the two SO-DIMM slots support upgrades of up to 64 GB DDR5-5600. Storage can be expanded using the two M.2 slots.

Key benefit & highlights

16:10 WUXGA IPS screen, Thunderbolt 4, webcam privacy shutter and fingerprint reader.

Suitable for: Specialist uses & power users

Acer Nitro 18 AI AN18-61-R25V Gaming Laptop

Why it suits this profile: A good choice for gamers and creators who value a large screen, dedicated graphics card and plenty of SSD storage.

How this product avoids the pitfall

The product specifications list both the RTX 5060 with 8 GB GDDR7 and its maximum graphics power of 115 W. This makes it easier to compare than looking at the GPU name alone.

Key benefit & highlights

18-inch WQXGA IPS screen with 165 Hz, 1 TB NVMe SSD and Ryzen AI 7 350 processor.

Buying RAM or computer components separately

An upgrade can be cheaper than buying a new system, but check your motherboard or laptop manual first. For laptops, the Kingston FURY 16GB 4800MT/s DDR5 Dual-Pack and Lexar DDR5 16GB SO-DIMM are examples of laptop RAM. For a desktop, the Crucial 16GB DDR5 DIMM is a suitable type, provided your system supports DDR5.

For a graphics card, check its length, thickness, power requirements and airflow, as well as the PCIe connection. A card that takes up three or four slots may block other expansion cards. Shut down the computer completely and take anti-static precautions when installing it.

Frequently asked questions

How much RAM do I need for a laptop?

For office work and working from home, 16 GB of RAM is usually a practical starting point. For gaming, video editing or heavy multitasking, 32 GB can give you more headroom. Always check whether you can upgrade the memory later.

Is a mini PC suitable for everyday work?

Yes, if you mainly use browsers, documents, video-conferencing apps and administrative software. Check the connections, ventilation and graphics capabilities. A Lenovo ThinkCentre M70q Gen 5 or MSI CUBI NUC AI can save space thanks to its compact design, but that doesn’t automatically make it suitable for demanding 3D games.

How much does it cost to run a gaming PC?

Power consumption depends mainly on the processor, graphics card and how long you use the computer. A gaming PC with a powerful graphics card uses more power under load than a mini PC for office work. So check the stated power rating, the power supply’s efficiency and how many hours you actually game each week.