THE PC BUILDING LIBRARY

PC building guides.

Choose your parts, check how they fit, build your PC and solve problems along the way.

34 guides to help with your build

Start here

Your first parts list, build notes and the decisions to make before ordering.

Budget & comparisons

Set a realistic budget and compare platforms, graphics brands and ready-built systems.

Choose components

Processors, graphics, memory, storage, cooling, power supplies and monitors.

POWER & COOLING

How to Estimate PC Power Use and Choose a PSU

Understand CPU and GPU power ratings, check PSU capacity and cables, and use a PC power estimate without treating it as a measurement.

3 min readRead guide
CPU BUYING GUIDE

How to Choose a CPU for Gaming and Productivity

Choose a processor around the work you want to finish and the display you want to drive. Core count, a gaming badge and a high clock speed are useful specifications, but none answers whether a CPU is the right purchase for your complete PC.

4 min readRead guide
GRAPHICS CARD BUYING GUIDE

How to Choose a Graphics Card for 1080p, 1440p and 4K

The right graphics card depends on what you play or create, your desired settings and the rest of the system. A resolution label is a useful starting point, but it cannot select a GPU or a fixed amount of VRAM on its own.

4 min readRead guide
MOTHERBOARD BUYING GUIDE

How to Choose a Motherboard: Socket, BIOS, Slots and Headers

A motherboard should support your exact processor and connect the devices you actually plan to use. Work through the support list, memory generation and physical layout before comparing decorative features or paying for expansion you cannot use.

4 min readRead guide
MEMORY BUYING GUIDE

How Much RAM Do I Need? Choosing 16GB, 32GB or 64GB

Choose RAM capacity for the applications and projects you keep open together. Memory speed and capacity solve different problems, and a larger kit is worthwhile when your workload can use the space or needs room to grow.

4 min readRead guide
STORAGE BUYING GUIDE

How to Choose an SSD for Gaming and Work: Capacity, NVMe and SATA

An SSD must fit the right slot, hold your real files and suit the transfers your work creates. Choose those fundamentals before paying for the largest sequential-speed number on the box.

4 min readRead guide
COOLING BUYING GUIDE

Air Cooler vs AIO Liquid Cooling: Which Fits Your PC?

Both air coolers and all-in-one liquid coolers can be appropriate choices. Select a specific cooler for your CPU workload, enclosure, noise preferences and maintenance expectations, rather than assuming that one cooling category always wins.

4 min readRead guide
DISPLAY CHOICES

Choosing a Gaming Monitor: Resolution, Refresh Rate and Connections

Match your display to the PC you are building, compare 1080p, 1440p and 4K, and check the connection needed for the mode you want.

3 min readRead guide

Check compatibility

Socket and BIOS support, memory profiles, physical clearances and connections.

BEFORE YOU BUY

How to Check PC Part Compatibility Before You Buy

Check CPU support, BIOS, DDR4 or DDR5 memory, case clearances and power connections before ordering your PC parts.

3 min readRead guide
CPU and motherboard

CPU and Motherboard Compatibility: How to Check BIOS Support

A matching CPU socket is the first check, but it does not tell you whether a particular motherboard can start with your processor. Use the exact CPU support entry, the installed BIOS version and an available update method before buying or replacing a CPU.

4 min readRead guide
Memory

DDR4 vs DDR5 Compatibility: Which RAM Fits Your Motherboard?

DDR4 and DDR5 describe different memory generations. They are not interchangeable upgrades for the same memory slot. The practical choice begins with your motherboard and processor, then moves to module type, capacity and the configuration you intend to install.

4 min readRead guide
Memory

XMP and EXPO: RAM Speed, Compatibility and Stability Checks

Your new memory can start at a lower rate than the number printed on its box. XMP and EXPO provide stored overclocking profiles, but the result depends on the processor, motherboard, firmware and installed modules. Use a stable default setup as your starting point.

4 min readRead guide
Graphics and case

Will My GPU Fit My Case? Length, Thickness and Cable Clearance

A graphics card can be shorter than a case's advertised GPU limit and still fail to fit. Check the complete card dimensions, installed cooling hardware, expansion-slot space and the power-cable route before choosing a particular manufacturer version of a GPU.

4 min readRead guide
Cooling and case

CPU Cooler and RAM Clearance: Check the Fan, Memory and Case Together

A tower cooler may support your CPU socket yet collide with tall memory or prevent the case panel from closing. Check the heatsink, front fan and installed RAM as one assembly rather than approving each advertised dimension separately.

4 min readRead guide
Cooling and case

AIO Radiator Compatibility: Will a 240, 280 or 360 mm Cooler Fit?

A case's radiator-size list is a starting point, not a complete fit guarantee. An AIO also has end tanks, fans, hoses and a CPU block. Check the intended mounting position and the neighboring parts before selecting the radiator size.

4 min readRead guide
Motherboard connections

Case USB-C and Motherboard Headers: Will the Front Port Work?

A motherboard can have a USB-C port on its rear panel without the internal connector needed for your case's front USB-C port. Check front-panel support, connector type and rated speed separately so a convenient case port does not remain disconnected.

4 min readRead guide
Storage

M.2, NVMe and SATA SSD Compatibility: Slots, Sizes and Shared Lanes

M.2 describes a physical format, while SATA and PCIe/NVMe describe storage connections and protocols. A drive that resembles the slot can still use the wrong interface. Check size, protocol, slot behavior and any shared resources before installing an SSD.

4 min readRead guide

Build & set up

Assembly, airflow, first boot, operating system setup and stability checks.

Fix a problem

Work through no power, no display, overheating and excessive fan noise.

Upgrade & reuse

Find the limiting component and decide which existing parts you can keep.