How to check PC parts compatibility

PC parts are compatible only when their electrical, software and physical requirements all fit together. A matching-looking connector is a starting point, not a guarantee. Before buying, record each part's exact model number and compare the manufacturer's specification pages for that combination. This is especially important when upgrading an existing computer.

Start with the parts you already have

Make a short table: part, exact model, manufacturer specification, result of the check, unresolved question. Include your current motherboard, case and power supply if this is an upgrade. “Core i7” or “GeForce RTX” names are too broad to identify generation, dimensions or power needs. Keep the table when you change one item; that change may affect several others.

CPU, motherboard and BIOS

Check the motherboard's supported-CPU list for its exact model and revision. Socket fit alone does not prove that the board supports that processor or the installed BIOS version. ASUS explains how to find the CPU and memory support lists. If a BIOS update is required, check the board maker's procedure and whether you can perform it with the processor available to you. Do not assume every board can update without a working CPU.

Memory and storage

Check the memory generation, module type, supported capacity and recommended slots. DDR4 and DDR5 are different standards. A speed profile such as XMP or EXPO has its own support requirements; first distinguish normal operation from an accelerated profile. For a two-module kit, use the slot pair specified in the board manual.

For an M.2 SSD, verify both the physical length and the slot's protocol. M.2 describes a form factor; a slot and drive still need compatible SATA or PCIe/NVMe support. Also check whether using one slot disables another port on that board. For a 2.5-inch SATA drive, confirm space, a data port and power connection. The exact motherboard or laptop manual is the source for these details.

Case, graphics card, cooling and power

Compare the graphics card's length and thickness with the case clearance after accounting for installed fans and radiators. The CPU cooler needs a supported mounting kit and enough height. Check the power supply's case format, continuous rating and the actual connectors needed by the motherboard and GPU. Intel's power-supply guide explains the cable and capacity checks. Never reuse a modular PSU cable from another model unless its manufacturer explicitly confirms compatibility; see Seasonic's cable guide.

A final check before ordering

1. The exact CPU appears in the board's support list, with a workable BIOS version.
2. Memory type, capacity and slot layout are confirmed.
3. Storage protocol, size and available connections are confirmed.
4. GPU and cooler fit the case, including fans and radiators.
5. The PSU supplies the needed connectors and capacity for the complete configuration.
6. Required display, peripherals, mounting parts and cables are accounted for.

Browse PC Store's component catalog to compare actual items. Send the exact model list when asking the store a compatibility question. Availability, price and receipt arrangements must be confirmed for the items you choose. If you will install the parts yourself, read the common build mistakes as a separate preparation step.