CPU Cooler Be quiet! DARK ROCK PRO 4:An appropriately powerful cpu cooler is an essential addition to every desktop PC. You can breathe a sigh of relief in the knowledge that the Be quiet! DARK ROCK PRO 4 is providing the air cooling your system requires. By using a high-speed fan and a robust heat sink, heat is drawn away from your processor and guarantees a safe temperature. The fan works at speeds up to 1500RPM. Speed is regulated automatically. You wont need to worry about disturbing others, as the CPU cooler operates at an ultra-silent 24,3dB. The Be quiet! DARK ROCK PRO 4 is designed to work with CPUs with Intel sockets: 1150, 1151, 1155, 1156, 1200, 1366, 2011, 2011-3 and 2066, and AMD sockets: AM2, AM2+, AM3, AM3+, AM4, FM1, FM2 and FM2+. The CPU cooler has dimensions of 136 × 163 × 146mm. Be quiet! DARK ROCK PRO 4 CPU Cooler Key Features Conventional air cooling Easy installation Automatically regulated fan control Maximum fan speed up to 1500RPM Maximum loudness: 24,3dB Dimensions: 136 × 163 × 146 mm