Manufacturer: Noctua. The NH-U9B Special Edition 2 continues the legacy of Noctua-s classic NH-U9 coolers, which have won over 150 awards and recommendations from leading international websites and magazines. While retaining the successful design and the renowned SecuFirm mounting system, this latest heatsink and fan revision has excellent compatibility with small cases and HTPC-s. Noctua-s NH-U9B SE2 coolers allow for perfect airflow direction and the heat pipes, soldered joints and 36 widely spaced aluminium cooling fins featured on this awesome heatsink guarantee optimal heat dissipation even at the lowest fan speeds from the included dual NF-B9 fans for push-pull configuration. Boasting exceptionally high airflow and pressure performance, the included NF-B9 90mm fans are ideal for CPU cooling. Bevelled blade tips, Vortex Control Notches as well as Noctua-s SCD drive system and premium-grade SSO-Bearing guarantee outstanding quietness and long-term stability. Noctua-s professional SecuFirm mounting system for Intel sockets LGA775, 1156, 1366 and AMD sockets AM2, AM2+ and AM3 ensure superior reliability and contact pressure. Noctua have also included a tube of their superior NT-H1 thermal compound, so this is a complete all-in-one cooling solution for modern high powered PC platforms. 6 year warranty.