The NH-L12Sx77 is a slightly taller variant of the award-winning NH-L12S, offering improved cooling performance and enhanced motherboard and RAM compatibility. With six heat pipes instead of four, it provides additional thermal headroom while maintaining the same standard fan arrangement, where the fan blows upwards from below the fin stack. This not only ensures optimal acoustics in situations with perforated case walls directly above the cooler but also helps to expel hot air from the case. The increased height significantly improves clearance for tall motherboard heatsinks or RAM modules. At a height of 77 mm, the NH-L12Sx77 is still compact enough to fit into standard Small Form Factor (SFF/SFX) cases.