A Beginner’s Guide to Building a PC in 2027

By James Thompson · Updated: 7 October 2026

Some links in my articles are affiliate links. I may earn a commission when you buy through them.

Your first PC starts with eight core parts: a processor, motherboard, memory, storage, power supply, case, CPU cooler and, for gaming or GPU-heavy work, a graphics card. Choose them around what you want to do, then assemble the system in a sensible order. Here’s where I’d spend the money and the parts I’d put on the shortlist.

Picture the finished setup. Is it a gaming PC with a fast screen, a photo-editing workstation, a machine for video projects, or a quiet computer for work? That answer determines which parts deserve the biggest share of the budget. A graphics card that makes sense for a 4K gaming screen can be an expensive distraction in an office build.

For gaming, go straight to How to Build a PC for Gaming for the budget, balanced and premium routes. If you’re still deciding, the use-case tables below give you a starting point for every core part. They are alternatives: choose one route through the build, rather than buying one item from every row.

Include your monitor, keyboard, mouse and Windows licence in the total if you need them. Our complete setup budget guide helps put those on the same list. For a first build, I’d choose a straightforward mid-tower and air cooling; both leave you room to work.

For a gaming PC, the graphics card usually takes the largest share of the parts budget. The screen matters: 1080p, 1440p and 4K place very different demands on it. Creative software changes the choice too. Blender’s GPU renderer and Premiere are good reasons to look closely at Nvidia, even when I’d choose Radeon for a gaming-only build.

For office work, use the 9600X’s integrated graphics and the motherboard’s display outputs. Put the saving into a better screen, useful storage or a quieter setup. A separate GPU earns its place when you need gaming performance, supported acceleration or more display connections.

Use Best Graphics Cards for Building a PC to choose by purpose, or Best Graphics Cards for Gaming PCs to compare gaming tiers. For the ASUS Dual RX 9060 XT, measure usable case space including the power lead, rather than just the card’s length.

Compare purposes in best graphics cards for building a PC.

Use the graphics-card guide to match the screen and games, then compare like-for-like frame-rate results.

Choose the board after the processor. AM4 and AM5 use different sockets and memory, so keep the platform together: Ryzen 5 5600, B550 and DDR4 belong in one route; Ryzen 9000, B650 and DDR5 belong in the other.

Then buy the connections you’ll use. Wi-Fi, rear USB ports, M.2 slots and a front USB-C header are more useful everyday considerations than an elaborate heatsink or a higher chipset name. A larger ATX board is easy to work around in a mid-tower; compact cases need a board of the size they support.

Our motherboard buying guide explains the ports and expansion features. Match the board revision to its CPU-support list and required BIOS version. For a newer CPU on an older board, BIOS Flashback support can make preparation much easier.

Compare purposes in best motherboards for building a PC.

Read the board/platform guide and check the case’s internal connections. PCIe and M.2 sharing keeps the planned drives and expansion cards usable together.

I’d start an ordinary gaming or mixed-use PC with a matched 32GB kit, supplied as two 16GB modules. It gives you room for your game or project alongside a browser and other applications. Fit the pair in the slots the motherboard manual recommends.

Photo projects, large video timelines and complex 3D scenes can justify 64GB or more. Buy that as a suitable matched kit when the workload needs it; adding another pair later is less straightforward than choosing the capacity at the start. DDR4 and DDR5 cannot be swapped between these platforms.

See how to choose a RAM kit for capacity, timings and memory profiles. The advertised 6000 speed uses a memory profile; establish a working first boot before enabling it. For heavier creative use, choose capacity around the size of the projects you actually keep open.

Compare purposes in best ram kits for building a PC.

Plan the RAM capacity for the work kept open together and the supported module arrangement. The profile guide covers setup once all memory is working at defaults.

Use an NVMe SSD for Windows, applications and your main games or projects. For a general first build, I’d rather have a useful 2TB drive than a smaller flagship SSD that immediately needs another drive beside it. A 1TB model suits a leaner setup if your library is modest.

Video projects are different: keep room for footage and a separate backup, and add a dedicated project or scratch drive when your workflow benefits from it. A second internal SSD is useful working storage; it is not a backup of the whole computer.

Read our SSD selection guide. The P310 linked here is the full-length M.2 2280 model. That length matters when choosing the board slot and securing the drive.

Compare purposes in best ssds for building a PC.

Choose enough working storage, then check the exact SSD format/interface. The PCIe comparison helps decide whether the speed premium serves this build.

Give yourself a clear table and lay out the board manual, screwdriver and small screw containers. Assemble the parts that are easiest to reach while the board is outside the case, then move on to the power leads and graphics card.

Start with the CPU: open the socket, align the marked corner and lower the processor into place without forcing it. Fit the memory in the recommended slots and secure the SSD in its M.2 position. Prepare the cooler mount while the back of the board is accessible.

Set the case standoffs for your motherboard size, fit the board, then install the PSU and route the main power leads. Connect front-panel switches, USB, audio and fans before the graphics card makes the lower headers awkward to reach. Fit the GPU in the main graphics slot, secure its bracket and connect its power leads.

Follow our illustrated assembly guide for the detailed sequence. Before powering up, the parts-fit checklist gives you a useful final pass through mounting, cables and clearances.

Building your first racing cockpit? Use the sim-racing build guide for the component tables and the starter wheel and pedal choices for the controls.

Have a particular job in mind? Start with Flight Simulation builds, Music Production builds, CAD and Engineering builds, Photography and Lightroom builds or Software Development builds for the purpose-specific tables. The home-server hub separates storage, media, virtual machines and game hosting.

Connect the screen to the graphics card in a gaming build, or to the motherboard when you are using CPU graphics. On the first start, enter the BIOS and confirm that the processor, memory capacity and SSD are detected. A new DDR5 system can spend time training the memory before the display appears.

Install Windows from the USB installer, then install the motherboard chipset, network and graphics drivers. Once the basic setup is working, enable the appropriate memory profile and choose the monitor’s intended resolution and refresh rate in Windows.

Use our first-boot guide for that sequence. If the fans run but the screen stays blank, follow the no-display checks in order.

Ready to choose a gaming basket? Start with the gaming build guide. Choosing between graphics cards for several jobs? Use the graphics-card buying guide to finish that decision.

Finish the desk with the monitor, work mouse and keyboard. Use an external backup routine for the important files.