The NH-U12S chromax.black is an all-black version of Noctua’s award-winning NH-U12S premium-quality quiet CPU cooler. Thanks to the same proven slim-tower heatsink design and NF-F12 PWM fan, it stays true to the NH-U12S’s successful formula of fusing excellent cooling performance with superb quietness of operation and outstanding RAM, case and PCIe compatibility. At the same time, the chromax.black version with its black fan and black coated heatsink combines these assets with a sleek stealth look. 100% RAM compatibility Thanks to its slim design with only 45mm fin depth, the NH-U12S will not overhang the RAM slots even with two fans installed. This gives the user full access to the memory modules on all current CPU sockets and guarantees 100% compatibility with tall heatspreaders or optional memory fans. Classic 120mm tower size for excellent overall compatibility Standing 158mm tall, the NH-U12S is short enough to fit most modern mid- or high-end tower cases. Measuring 125mm wide (including fan and fan clips), the cooler stays clear of the top PCIe slot on most standard ATX or Micro-ATX motherboards, ensuring optimum compatibility with multi-GPU setups. NF-F12 120mm Focused Flow fan Recommended by more than 150 hardware publications and thousands of enthusiasts world-wide, the Noctua's premium quality NF-F12 Focused Flow 120mm fan is renowned to combine superb static pressure, excellent heatsink performance and surprising quietness of operation. Anti-vibration pads and fan-clips for second NF-F12 (optional) For users who want to achieve even better performance by adding a second, optional NF-F12 PWM chromax.black.swap fan to create a push/pull setup, the NH-U12S includes fan clips and an extra set of custom-designed anti-vibration pads that allow to off-set the rear fan by 5mm to improve acoustics in dual-fan mode. If technically possible, Noctua will also provide upgrade kits for future sockets, which makes the NH-U12S a safe long-term investment.