NH-U12S is the latest version of Noctua award-winning NH-U12 coolers; 1st introduced in 2005,NH-U series has become a standard choice for premium quality quiet CPU coolers n won more than 400 awards n recommended by leading int"l hardware webs n magazines * With only 45mm fin depth,NH-U12S will not overhang the RAM slots even w/ 2 fans installed; This gives the user full access to the memory modules on all current CPU sockets n guarantees 100% compatibility w/ tall heatspreaders/optional memory fans * Standing 158mm tall, NH-U12S is short enuf to fit most modern mid-/high-end tower cases; Measuring 125mm wide (including fan and fan clips), the cooler stays clear of the top PCIe slot on standard ATX/Micro-ATX motherboards * Recommended by more than 150 hardware publications n thoUSAnds of enthusiasts worldwide, Noctua"s premium quality NF-F12 Focused Flow 120mm fan is renowned to combine superb static pressure,excellent heatsink performance n surprising quietness of operation * The NF-F12 120mm fan supplied with the NH-U12S supports PWM for convenient automatic speed control through the mainboard; In addition, the max; fan speed can be reduced from 1500 to 1200rpm using the supplied Low-Noise Adaptor for even quieter operation * Complying with the open SecuFirm standard, the NH-U12S can be made compatible with the older LGA1366 and LGA775 sockets using the optional NM-I3 mounting kit, which is provided by Noctua free of charge. * For user who want to achieve even better performance by adding a 2nd/optional NF-F12 fan to create a push/pull setup,NH-U12S includes fan clips n extra set of custom-designed anti-vibration pads * Supporting Intel LGA1150, LGA1155, LGA1156, LGA2011 and AMD (AM3+, AM2+, FM1, FM2), the SecuFirm mounting included with the NH-U12S guarantees perfect contact pressure and maximum convenience on all current sockets.