A good gaming PC is not a collection of the fastest individual parts. It is a system that distributes the budget around the games and display you actually use.
Begin with the display and frame-rate target
Higher resolutions demand more graphics power. Competitive games aiming for high frame rates may rely on both the processor and graphics card. Defining the target prevents overspending.
Balance the CPU and graphics budget
Visually rich games tend to lean on the GPU, while games with many players or objects may use more CPU resources. Check benchmarks for the kinds of games you play rather than relying on one overall score.
Memory and storage
Memory should cover the game, operating system and programs used at the same time. An SSD improves loading times but does not raise frame rates in every situation. Check available slots and leave room to upgrade.
Power and cooling still matter
A reputable power supply and sensible case airflow improve stability. Confirm component dimensions and cable connections before ordering.