Final answer:
The most important hardware components for a custom gaming PC are the processor, graphics card, and memory.
Step-by-step explanation:
In a custom gaming PC, the most important hardware components are the processor, graphics card, and memory.
The processor handles all the calculations in the computer and affects the overall performance.
The graphics card is responsible for rendering the visuals in games. A powerful graphics card with a lot of VRAM (Video Random Access Memory) can provide better graphics and smoother gameplay.
Memory, also known as RAM (Random Access Memory), stores data that the computer needs to access quickly.