A practical PC compatibility checklist.

Confirm CPU, motherboard and memory support.

Record the processor model and the motherboard's exact model and revision. Check the board maker's CPU support information, including any required firmware version. Sharing a socket is one requirement, but does not by itself confirm that the board will boot the processor with its installed firmware.

For system RAM, check generation, module type, total capacity and the proposed number of modules. Review the board's memory support information for that configuration. A qualified-vendor list records tested combinations; it is useful evidence, rather than a guarantee that every kit or setting will work.

ASUS explains how to find its CPU and memory support lists. Other manufacturers provide model-specific support resources too. Use the documentation for the actual board and ask the builder to handle any required firmware preparation.

Check the occupied space, not just the case label.

A case's advertised graphics-card clearance can change when fans, radiators or other components occupy the same area. Check card length, height and thickness, along with room for the installed power connector and its required cable routing. Avoid assuming two cards with the same graphics-chip name have the same dimensions.

• Motherboard and case: supported form factor, mounting positions and expansion layout.
• CPU cooling: mounting support, cooler height or radiator placement, and suitable capacity for the intended processor settings.
• Shared clearance: memory height, radiator thickness, fans, drive cages and graphics-card space when installed together.
• Airflow and access: clear intake and exhaust paths, usable ports, and access for maintenance.

A concept drawing is useful for discussing appearance. It does not resolve measurements or prove the actual arrangement will fit.

Verify the complete power arrangement.

Check the exact power-supply model, form factor, output capacity and required connections against the complete system. Leave headroom appropriate to the components and operating conditions; one universal percentage cannot validate every build.

Confirm that the supplier uses the correct cables and fully seated connections required by the component manufacturers. Modular power-supply cables are not universally interchangeable. Do not reuse an unknown cable simply because its connector fits.

These are buying checks, not instructions to work on live electrical equipment. Never open a power supply. If there is smoke, sparking, a burning smell or liquid damage, stop using the PC and seek qualified help.

Include storage, expansion and software.

Check each storage device's interface, supported slot or bay, and the motherboard manual's notes about shared lanes or disabled ports. Confirm that the graphics card leaves any necessary expansion slot accessible. Check front-panel connectors, USB needs, networking and display outputs.

For the operating system and applications, confirm supported hardware, drivers and legitimate licensing. Specialist workloads can also depend on a specific GPU software stack or supported professional features. Enough RAM or VRAM does not replace those support requirements.

Keep a record of what was confirmed.

Save the final bill of materials, current manuals or specification links, the seller's written confirmation and any approved substitution policy. Ask who checks the assembled configuration and what testing is included. Compatibility and completed-system reliability are related, but they are not the same check.

If a model, dimension, connector, firmware version or software requirement is unknown, leave that item unresolved until evidence is available. This matters especially for compact systems, high-power components or unusual workstations.

Use the PC buying checklist to include support and cost alongside the technical checks. You can save your requirements and request a review without placing an order.