What Is a Barebones PC? | The Build-Your-Own Shortcut

A barebones PC is a partially assembled computer kit, usually with a case, motherboard, CPU, and power supply, that leaves RAM, storage, and the OS for you to add.

A barebones PC is the middle path between buying a complete desktop and assembling every component from scratch. You get the tricky parts—like the motherboard, processor, and case—already put together, saving you the risk of mishandling delicate hardware. You still get to choose the memory, storage, and operating system, which means you control the final cost and performance. For anyone who wants a custom build without the full assembly project, this is a practical way in.

What Typically Comes In a Barebones Kit

The exact contents vary by vendor, but most barebones kits share a similar baseline. You can expect a case, motherboard, and CPU, and most include a power supply and cooling solution. Some vendors sell models that also require you to add the processor. The parts left out are usually the ones buyers want to pick themselves.

• Usually included: Case, motherboard, CPU, power supply, and cooling.
• Usually missing: RAM, storage (SSD or HDD), and the operating system.
• Form factor: Many barebones systems are compact mini PCs, not full-size towers.

Why Buy a Barebones System Instead of a Full PC?

Barebones PCs appeal to buyers who want a customized system without paying for parts they don’t need. You choose the capacity and performance of the memory and storage, and you pick your own operating system. This avoids the fixed configuration you get with a retail desktop and often saves money over buying all the components separately.

The trade-off is that you must source the missing parts yourself. If you want a ready-to-use machine, you must factor in the cost of RAM, a drive, and an OS license. The overall price can still beat a prebuilt with similar specs, but the final figure depends heavily on your component choices.

Real-World Barebones Models and Their Specs

Many leading manufacturers sell barebones versions of their mini PCs. The ZOTAC ZBOX CI337 Nano, for instance, uses an Intel Processor N100 and supports one DDR5-4800 SODIMM slot up to 16GB. The listing explicitly states it ships with no memory, storage, or operating system. The MINISFORUM MS-01 Barebone takes a more powerful route with a Core i9-13900H, two USB4 ports, dual 10G SFP+ networking, and two DDR5-5200 slots. The ASUS PN63-S1 supports up to 64GB of DDR4-3200 memory and offers a triple-storage design with one 2.5-inch bay and two M.2 slots.

What to Check Before You Buy a Barebones PC

Before buying, you need to confirm that your planned components are compatible. The most common pitfall is ordering parts that don’t match the board. First, verify the exact SKU or model suffix, since barebones and fully configured versions often have similar names but different included parts. Then check that your RAM matches the required type and speed, like the DDR5-4800 the ZBOX needs. Finally, confirm the storage support, including M.2 keying and whether a 2.5-inch bay exists. The wrong part usually means a return, so double-checking saves you a headache.

It’s also worth remembering that not every part in a barebones system is replaceable. The motherboard, processor, fan, and power supply are often fixed. This limits future upgrades, so the system you buy is largely the system you’ll keep. If you’re prioritizing future flexibility, a fully custom build might be a better path. When you’re ready to compare the top options on the market, our tested roundup of the best barebones gaming PC options can point you toward models built for performance.