Build your PC

The tower is there from the start: pick each component and see where it sits inside the case. Then add whatever you want from the room — monitor, chair, lighting, audio — and the setup builds itself in 3D alongside you.

What the builder checks

Five checks you can do on paper, and nothing it cannot back up

The tower starts full: eight parts that always go in. The room is optional: add only what you are missing, and each item shows up in the 3D scene.
Pick one of three tiers or type your own budget. With a budget, it builds the strongest PC whose price band tops out within your number; if nothing fits, it drops room items first, the lights before the monitor.
Each slot holds up to three options, so you can compare them head to head before you choose.
Prices are our own bands, not Amazon's price of the day, and the total is a band too.

Part	What the builder checks
Processor	Its socket against the motherboard's.
Motherboard	Socket, memory type, and its form factor against the case.
Memory	DDR4 or DDR5, against what the motherboard takes.
Graphics card	Its power draw goes into the power supply math. Its length is checked in Will it fit?
Power supply	Its watts against processor + graphics card + 100 W for the rest of the PC, with a 30% margin, rounded up to a PSU size you can buy and never below what the graphics card maker asks for.
Case	The motherboard sizes it takes. Clearances are checked in Will it fit?
Cooling	Not its height here: that is checked in Will it fit?
Storage	In a tower, M.2 2280. The short 2230 drives from handheld consoles get flagged.

When a spec sheet is missing the data, the check stays gray and says what is missing. It never turns green by default.

Questions about the builder

Does it tell me how many frames I will get?

No. That has to be measured with the parts in hand, and we have not done it. The builder only says whether the parts fit together physically and electrically, because that is arithmetic, not opinion.

How does it work out the power supply?

It adds the official power figure of the processor (Intel: Maximum Turbo Power; AMD: TDP) and of the graphics card, 100 W for the rest of the PC and a 30% margin. Then it rounds up to a PSU size you can buy and never goes below what NVIDIA, AMD or Intel asks for. Same method as our PSU calculator, with one extra: if the brand of your exact card asks for a bigger PSU, we go with the brand.

Does it check that my graphics card fits the case?

Not here: the millimeters of the graphics card and the cooler are checked in Will it fit?, with the clearances each maker publishes.

Can I buy the whole build at once?

Each part has its own Amazon link. Open them one by one: every link is a paid link (we earn a commission) and opens that part on Amazon.

Will it fit? · PSU calculator · Gaming gear catalog · Buying guides