How I Plan a PC Build

Almost every build guide starts with a parts list. That is backwards, and it is why parts lists date so badly: the specific model numbers are obsolete within a year, and the reasoning that produced them — which does not go out of date — never got written down.

So this page is the reasoning. It is how I decide where the money goes before I open a single product page.

Step one: name the machine's job in one sentence

Not "a good gaming PC". Something you can test a decision against. "Runs the games I play at 1440p without me thinking about settings." "Edits 4K video without the timeline stuttering." "Sits under a desk being quiet and boots in three seconds." Every subsequent decision is checked against that sentence, and the ones that do not serve it get cut.

This is the step people skip, and skipping it is what produces builds with a top-tier processor doing nothing while the graphics card is the thing actually limiting frame rate.

Step two: split the budget before you shop

The proportions matter far more than any individual purchase. Rough allocation, adjusted to the sentence you just wrote:

• Gaming. The graphics card takes the largest single share by a clear margin. In the overwhelming majority of games it is the part deciding frame rate, and a mid-range processor will not hold back a strong card at 1440p or above.
• Creative or compile work. Move that share toward the processor and toward memory capacity. Rendering, compiling and heavy multitasking scale with cores and with having enough memory not to swap.
• General desktop and light work. Spend proportionally more on storage speed and capacity, on a quiet cooler, and on the monitor. A faster graphics card does not make a spreadsheet open sooner.

Then set aside a fixed slice — not what is left over — for the power supply, the case and cooling. Those three are chronically under-budgeted because none of them makes a benchmark number go up, and all three decide whether the machine is stable, quiet and pleasant to work inside two years from now.

Step three: buy the parts where the specification is honest

Some component categories publish specifications you can act on. Others publish marketing. Knowing which is which is most of the skill.

Power supplies: honest, because somebody else tests them

The 80 PLUS program tests efficiency at defined load points and awards tiers — Bronze, Gold, Platinum and above. A Gold badge means a laboratory measured that unit, which makes it one of very few claims in a PC listing that is not self-reported.

Choose wattage from the actual draw of your parts plus headroom, not from the biggest number you can afford. A supply running near its limit runs hot, runs its fan hard, and has nothing in reserve when a graphics card spikes. Most units are near their efficiency peak somewhere around half load, so headroom is not waste.

Then check the connector generation. Current platforms use ATX 3.x and PCIe 5.x with a native 12V-2x6 connector for high-draw cards. Buying an older supply and adapting it puts an extra junction into the highest-current path in the machine — which, exactly as in the twelve-volt wiring on my 4Runner, is precisely where connections fail.

Storage: read the interface, not the brand

Two specifications decide fitment before performance ever comes into it: the form factor (M.2 2280 is the length nearly every board takes) and the interface generation (a Gen4 drive in a Gen3 slot works, and runs at Gen3 speed). Sequential figures are a best case that most desktop use never reaches. Buy capacity first, then generation.

Cooling: the number that matters is clearance

Cooler performance is real, but the specification that actually stops a build is height. A dual-tower air cooler is tall, and case listings state a maximum CPU cooler height for precisely this reason. Check that, and check memory clearance, before you check a review.

Cases: where the marketing is loudest

Case listings sell fan count, glass and lighting. The three numbers that decide whether your parts fit are maximum GPU length, maximum CPU cooler height and radiator support. A listing that gives you the fan count and not those three is not telling you the thing you need. That is why the last product on this page is a skip.

What this looks like when it is a real machine

All of the above is the method. If you would rather see it applied, my own build is written up separately — two nearly identical machines assembled in the same week, the actual parts, what I paid, and the one graphics-card decision that separated them. It is also where I show the first-boot screen with the memory profile still switched off, which is the mistake this page's allocation logic cannot save you from.