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Buying guide: how to choose an all-in-one PC

An all-in-one PC integrates the computer into the display to save desk space. Your choice depends primarily on processor power and memory capacity, which determine multitasking fluidity. Screen size and brightness then affect daily comfort.

What to check

Processor core count The processor core count determines how many tasks the computer can handle simultaneously. Recent market listings show a range from two cores for entry-level models to twenty cores for high-performance configurations, with a median of eight cores. A processor with two or four cores suffices for office work and web browsing. From eight cores onwards, multitasking becomes smoother and professional applications respond better. Beyond sixteen cores, the computer handles creative software, video editing or development workloads without slowdown. The bar on each product page extends with more cores, indicating better multitasking capacity. Market median: 8
Memory capacity Memory holds the data of running applications. Market models offer from eight to thirty-two gigabytes, with a median of sixteen gigabytes. Eight gigabytes allow you to open a few light applications without saturation. Sixteen gigabytes provide comfortable headroom for browsing with many tabs, working on large documents or photo editing. Thirty-two gigabytes suit intensive use: video editing, virtual machines or development with multiple active environments. Insufficient memory slows down the entire system as soon as several programs run simultaneously. The bar grows longer with more memory, showing how many applications can run together. Market median: 16 GB
Storage capacity Storage capacity determines the volume of files and programs the computer can keep. Recent configurations range from two hundred and fifty-six gigabytes to one terabyte, with a median of five hundred and twelve gigabytes. Two hundred and fifty-six gigabytes work if you store documents in the cloud and install few programs. Five hundred and twelve gigabytes let you keep a photo library and several professional applications. One terabyte or more becomes necessary for storing videos, heavy projects or numerous games. Choose an SSD drive to speed up startup and program launch. The bar extends with more storage space. Market median: 512 GB
Screen diagonal Screen diagonal defines the available workspace on the display. Market models show diagonals between twenty-one and a half inches and twenty-seven inches, with a median of twenty-three point eight inches. A twenty-one inch screen suits a narrow desk or simple office use. From twenty-four inches, you can display two windows side by side without difficulty. Twenty-seven inches provide appreciated comfort for image processing, extended spreadsheets or video editing. Check that resolution matches size to maintain sharp image quality. The bar lengthens with larger diagonals, offering more workspace. Market median: 23.8 "
Maximum brightness Maximum screen brightness measures in candelas per square metre and affects readability in bright environments. Recent listings show values from two hundred and fifty to three hundred and fifty candelas per square metre, with a median of two hundred and fifty. At two hundred and fifty candelas per square metre, the screen remains readable in moderately lit rooms but may appear dull facing a window. Three hundred and fifty candelas per square metre allow comfortable work even with direct light sources. High brightness reduces eye strain during daytime and avoids closing blinds. The bar extends with higher brightness levels. Market median: 250 cd/m²
Connectivity and upgradability Connectivity determines which peripherals you can connect without adapters. Check the number and type of USB ports, presence of an HDMI port for a second screen, memory card reader or audio output. Some models allow adding memory or replacing the storage drive, others are completely sealed. If you plan to upgrade the configuration over time, choose a model whose rear panel gives access to main components. Wireless connectivity, Wi-Fi and Bluetooth, simplifies installation on a desk without cables. Consider your current and future peripheral needs before purchasing.

Benchmarks based on 30 recent market listings, collected on 4 October 2026.

What you get for each budget

Under €700

Entry-level models typically combine a processor with limited core count, eight gigabytes of memory and two hundred and fifty-six gigabytes of storage, with a twenty-one inch screen and standard brightness for office use.

€700 to €1,400

This range offers balanced configurations: eight-core processors, sixteen gigabytes of memory, five hundred and twelve gigabytes of storage and twenty-four inch screens with decent brightness, suited to multitasking and common professional applications.

Over €1,400

High-end configurations provide processors with sixteen cores or more, thirty-two gigabytes of memory, one terabyte of storage and twenty-seven inch screens with elevated brightness, intended for intensive use and content creation.

Frequent mistakes

Not checking component access before purchase if you plan to increase memory or storage later.
Choosing a large screen with too low resolution, which degrades display sharpness.
Underestimating required storage by forgetting that the system and installed applications occupy part of it.
Neglecting screen brightness when the desk is exposed to natural light.
Focusing only on core count without considering memory, although both work together on fluidity.