What Are the Most Important Specifications for a Gaming Desktop?

Hey everyone!

I’m in the market for a new gaming desktop, https://www.lenovo.com/au/... and I want to make sure I’m making an informed decision. There are so many specs out there, and it can be overwhelming. What do you think are the most important specifications I should look for when choosing a gaming desktop?
Here are a few specs I’ve heard about:

Processor (CPU) - How powerful does it need to be?
Graphics Card (GPU) - Is this the most crucial component for gaming performance?

RAM - How much do I really need?

Storage - SSD vs. HDD – what’s best for gaming?

Cooling System - Do I need to worry about cooling, or are most systems good enough?

I’d love to hear your thoughts and any personal experiences you might have. What specs have made a significant difference in your gaming experience? Thanks in advance!