You want a gaming PC that handles heavy frame rates and stays relevant for the next five years, so you are building it right the first time instead of swapping parts in eighteen months. A custom rig means you pick the power you actually need for your favorite games without paying for pre-built bloat.
Timing the market matters just as much as picking the parts. If you wait for major new graphics card releases, last-generation parts hit clearance and used markets get flooded, which is where you save the most cash on high-end gear.
That intro window is a deadline, not free money, and any balance left on the Citi Simplicity® Credit Card when it ends will trigger standard interest charges on the original amount.