Thermaltake Pacific DIY LCS W4 Plus CPU Water Block

The Thermaltake Pacific W4 Plus is a CPU water block engineered for custom liquid cooling enthusiasts who want both high thermal performance and striking aesthetics. At its core is a nickel-plated copper cold plate with an optimized micro channel structure, designed to maximize the surface area in contact with coolant and efficiently draw heat away from the CPU. The nickel plating serves a dual purpose — it enhances durability and provides anti-corrosion protection, which is particularly valuable in loops where mixed metals could otherwise cause galvanic corrosion over time.

The visual appeal comes from 12 software-controllable addressable RGB LEDs arranged in a circular pattern, giving builders granular control over lighting effects to match their system's color scheme. Socket compatibility spans a wide range, covering Intel platforms from LGA 775 through LGA 2066 and AMD sockets from AM2 through AM4, making it a flexible option for builds across multiple processor generations. Those on Intel's newer LGA 1700 platform can purchase a separate mounting kit to extend compatibility. As a component in a custom loop, the W4 Plus requires a pump, reservoir, radiator, tubing, fittings, and coolant — it is not a standalone cooling solution, but rather a high-performance building block for liquid cooling enthusiasts who want precise control over their thermal and aesthetic setup.