PC Water Cooling Parts

What Is Custom Loop Water Cooling?

A custom loop water cooling setup routes liquid coolant through a series of connected components to draw heat away from your CPU, GPU, or other hardware. Unlike all-in-one coolers, a custom water cooling kit lets you choose each part individually, so you control the layout, capacity, and aesthetics of your cooling system. Core components typically include:

• Water blocks: Transfer heat from your CPU or GPU into the coolant
• Pump & reservoir: Keep coolant moving through the loop
• Radiators: Dissipate heat from the liquid
• Tubing & fittings: Connect everything together
• Coolant: Formulated for use in closed liquid loops

Choosing the Right Water Cooling Kit for Your PC

The right custom water cooling kit depends on how much heat your system generates and how much space you have inside your case. A CPU-only loop is a solid starting point for most builds, while a CPU and GPU loop makes sense if you're running high-performance graphics and want to manage thermals across both components. Radiator size matters too: larger surface area means more heat dissipation, which becomes important when cooling multiple blocks in a single loop.

Tubing style is another key choice. Soft tubing is flexible and easier to work with, making it a practical option for first-time builders. Hard tubing (typically acrylic or PETG) offers a cleaner, more structured look and suits builders who want precise, visible runs through the case.

Using the Custom Cooling Configurator

If you're new to custom loop water cooling, the CORSAIR Custom Cooling Configurator is a useful starting point. It walks you through component selection with compatibility checks built in, so you can design your loop with confidence before you buy.

Expand and Upgrade Over Time

One of the practical advantages of a custom water cooling setup is modularity. You can start with a CPU loop and add GPU cooling later, swap in a larger radiator, or change fittings and tubing as your build evolves. Every part in your loop can be replaced or upgraded independently, so your cooling setup can grow alongside your system.

Custom liquid cooling gives you direct control over your PC's thermal performance. Whether you're running a high-end CPU, a power-hungry GPU, or both, a custom water cooling loop lets you manage heat output on your terms, keeping components running at stable temperatures during long sessions and demanding workloads.