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Build your own PC or buy a ready-made one?

By Sercan, founder of COZO · Updated on 7 November 2026

In short
If you want to start gaming quickly, choose a ready-made PC: COZO selects the parts and matches them. To choose yourself with a compatibility safety net, use the PC Builder; COZO assembles that PC itself and boots it up before shipping, but as a consumer you cannot return it. Building it yourself gives the most control, but you check every combination yourself.

For a new gaming PC you have three routes: build it yourself from separate parts, put it together in a configurator, or buy a ready-made PC. None of the three is always the best; it depends on how much you want to do yourself, how much you want to choose and what you are willing to spend on it. This guide lays out the differences.

Unsure? Tell us which games you play and what you want to spend at contact@thecozo.be, and we will think along.

The three ways

  • Build it yourself from separate parts: you choose every part in Parts and put the PC together yourself. You get the most choice and control, but also all the responsibility.
  • Put it together in the PC Builder: you choose the parts yourself in a configurator that only shows parts that are compatible with each other. You get a custom-assembled PC, which COZO assembles to your choices and powers on before shipping, only after you order.
  • Ready-made gaming PC: the parts are selected by COZO and matched to each other. You browse the gaming PCs, choose one and plug it in.

The differences at a glance

Build yourselfPC BuilderReady-made
Who chooses the parts?YouYou, with a compatibility checkCOZO
CompatibilityYou check everything yourselfThe configurator only shows parts that work togetherAlready matched to each other
Work on your sideAssemble and install everythingPlug in and installPlug in and install your games
Right of withdrawal (consumer)14 days on separate partsExcluded from the right of withdrawal14 days
Warranty2 years from delivery2 years from delivery2 years from delivery
Upgrading laterYesYes, standard partsYes, if the power supply and case allow it

Is building yourself really cheaper?

Sometimes, sometimes not. It differs per part and changes with prices, which move every day. The most honest way: add up the price of the separate parts and compare it with a ready-made PC with the same parts. Do not forget that building a PC takes time and that you also need Windows; you can find a licence under Software.

Building yourself mostly has other advantages: you decide every detail, you get to know your PC and you choose consciously where your money goes.

What you need to build yourself

  • A Phillips screwdriver, some patience and a tidy workspace.
  • The manuals of the motherboard and the case. They show where every cable and connector goes.
  • An operating system on a USB stick to install.
  • Possibly a BIOS update if the processor is newer than the motherboard; read more in our guide which processor fits which motherboard.

Typical mistakes when building yourself

The PC Builder is made for exactly these mistakes: it only shows parts that are compatible with each other. Building with separate parts is possible, but check every combination.

  • A processor and motherboard with a different socket.
  • DDR4 memory on a DDR5 motherboard, or the other way round.
  • A cooler that is too tall for the case, or a graphics card that is too long.
  • A power supply with too little wattage or without the right connector for the graphics card.

Which route suits you?

If you want to game as soon as possible and would rather not choose yourself, a ready-made PC is the easiest route; the guide to buying a gaming PC helps you choose. If you want to decide the motherboard, graphics card and case yourself, with a safety net for compatibility, use the PC Builder. If you want to do everything yourself and learn from it, build with separate parts.

Note: as a consumer you cannot return a PC from the PC Builder, because it is made to order: you choose the parts and COZO assembles them for you. This is also stated on Returns.

Frequently asked questions

Is building a PC yourself difficult?

It is mostly precise work. With the manuals of the parts and the right combination of parts, many people manage the first time. Most problems come from parts that do not fit together.

Do I lose my warranty if I build it myself?

No, the warranty on the parts stays valid. Damage caused during building, such as a bent pin or a broken connector, is usually not covered. Read the terms at Warranty & RMA.

What if parts are not compatible?

Check before you order. In the PC Builder you only see parts that are compatible with each other. With separate parts you check the socket, memory type, size and power supply yourself.

Can I upgrade parts later?

Yes. A desktop is made of standard parts, so you can replace memory, storage or the graphics card later, if the power supply and case allow it.

Can I return a PC from the PC Builder?

Not as a consumer: a custom-assembled PC is excluded from the right of withdrawal because it is made to order: you choose the parts and COZO assembles them for you. For a defect the warranty does apply, see Warranty & RMA.

Read also

Sources

The official figures come from these pages of the makers, read on 8 November 2026. Check there for the latest version.

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