PC Water Blocks
A PC water block is the core component of any custom liquid cooling loop. It mounts directly to your CPU, GPU, or other heat-generating component, drawing heat away from the die and into the coolant that circulates through your system. If you're building a high-performance custom cooling loop, choosing the right waterblock is one of the most important decisions you'll make.
What Is a PC Water Block?
A PC water block is the core component of any custom liquid cooling loop. It mounts directly to your CPU, GPU, or other heat-generating component, drawing heat away from the die and into the coolant that circulates through your system. A water block is a precision-machined unit, typically built with a copper base plate and nickel plating, that sits flush against the surface of your component. Coolant flows through internal channels inside the block, absorbing heat and carrying it away to a radiator where it is dissipated. The design of those internal channels — often called the micro-fin or jet plate structure — directly affects how efficiently your water block setup transfers heat.
Types of Water Blocks for PC Builds
Water blocks are available for several key components in your system:
- CPU Water Blocks: The most common type. These mount to your processor socket, covering AMD and Intel platforms depending on the model. Always verify socket compatibility before purchasing.
- GPU Water Blocks: Full-cover designs that cool the graphics card die, VRAM, and power delivery components simultaneously. These are GPU-model-specific, so check your card's make and model carefully.
- Chipset and VRM Water Blocks: Supplementary blocks that target motherboard components for builders pushing their systems hard.
- Pump-Reservoir Combo Blocks: Some water blocks integrate a pump and reservoir, which simplifies your loop layout.
Choosing the Right Water Block for Your System
When selecting a water block, keep these factors in mind:
- Socket Compatibility: CPU water blocks are designed for specific sockets such as AM4, AM5, LGA1700, or LGA1851. Confirm your platform before buying.
- GPU Model Match: GPU water blocks are typically designed for specific card models or board partners, so verify the fit precisely.
- Material and Finish: Copper bases with nickel plating offer reliable thermal contact and corrosion resistance when used with compatible coolants.
- Fitting Size: Make sure the block's G1/4" or other port size matches your tubing and fittings.
- RGB and Aesthetics: Many water blocks include integrated RGB lighting, which you can control and synchronise through compatible software.
Building Your Custom Loop
A water block is one part of a complete custom liquid cooling setup. You'll also need a pump, reservoir, radiator, tubing, fittings, and coolant to complete the loop. Planning your loop layout before purchasing any components helps you avoid compatibility issues and get the most out of your build. Browse our full range of PC water blocks to find the right fit for your CPU, GPU, and custom loop build.