Start with the exact CPU support list and required BIOS version. Then choose a board that provides the memory support, expansion and connections your build actually needs.
Check support, not just the socket name
Two parts sharing a socket name is a starting point, not a complete compatibility result. Open the motherboard’s support page and search for the exact processor. Record the required BIOS version and check whether the board you are buying is ready for it.
A retailer may not know the firmware on an individual unit. In that situation, check whether the board supports updating without a recognized processor and what steps the manufacturer requires. Keep those instructions with your build notes.
Choose a case size before adding features
ATX, Micro-ATX and Mini-ITX describe different board formats. Your case must support the format, but a larger board is not automatically the better gaming purchase. Choose the space you need for expansion, connections and installation access.
Make a list of devices before comparing boards: graphics card, capture card, network card, storage and front-panel connections. This avoids paying for an unused feature while missing a connection you need every day.
Read the slot-sharing notes
A long PCIe slot is not proof that it has sixteen electrical lanes. The board specification and manual describe how each slot is connected and whether that changes when other devices are installed. M.2 slots can also share resources with other connections.
Sketch your intended storage layout. Name the slot for the operating-system drive and any future drive. Check the supported drive length and interface for each position. If a manual contains a lane-sharing table, apply it to your actual combination rather than reading only the total slot count.
Source: MSI B650 Tomahawk: an example of an exact-board manual
Match the memory configuration
Check the supported DDR generation, capacity and module arrangement. Use the board’s memory support information for your processor generation. An advertised overclocking speed does not guarantee that every kit or four-module configuration can run at that setting.
For a straightforward build, start with a matched kit and follow the recommended slots in the manual. If you want a large future upgrade, consider replacing the kit rather than assuming that separately purchased modules will behave identically.
Source: MSI B650 Tomahawk: an example of an exact-board manual
Compare the details you will notice
Count rear USB ports, identify the required display outputs if you plan to use integrated graphics, and check networking. Confirm the headers needed by your case, particularly front USB-C. Also check cooler mounting support and access to connectors once the graphics card is installed.
Compare the complete build cost. An expensive motherboard does not automatically increase game FPS with the same processor and settings. Look for independent testing of power delivery and sustained operation when pairing a board with a demanding CPU, then pay for features you can name.
How to build a PC: component selection and assembly
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