A CPU IHS (Integrated Heat Spreader) heatspreader is a precision replacement or upgrade component designed to improve thermal performance by enhancing heat transfer from the CPU die to the cooler. Made from high-quality materials like nickel-plated copper, these custom IHS units offer better flatness, increased thermal conductivity, and superior surface contact compared to stock options. Ideal for delidded processors, overclockers, and performance enthusiasts, upgraded IHS heatspreaders help lower temperatures, improve cooling efficiency, and ensure better stability under heavy workloads or extreme tuning conditions.