Zalman 20X is a powerful CPU air cooler that is compatible with Intel 2066, 2011, 1200, 115X and AMD AM4, AM3. Improved cooling performance by increasing the heat dissipation area 15% with the 4D stereoscopic corrugated cooling fin 350 individual airflow passages are formed to improve the straightness of the airflow Application of RDTH (Reverse Direct Touch Heatpipe), IHD (Interactive Heatpipe transfer Design) for excellent performance with minimum heat resistance 140mm Dual-Blade spider fans provide maximum cooling performance with unique RGB effect (ZALMAN Patent) Supports motherboard addressable RGB sync (3-Pin, 5V) Provides designated RGB software for Z-SYNC maximize user experience 20X comes with high-performance thermal compound (ZM-STC8) It works with Razer Chroma RGB via a Chroma compatible motherboard or ZALMAN ZSYNC (Sold separately)