Fanless heatsink for 100% silent cooling through natural convection (see setup guidelines & list of recommended cases) or semi-passive setups with virtually inaudible NF-A12x25 LS-PWM fan (optional)100% RAM compatibility on AMD AM4 and Intel LGA1700/1200, clears the top PCIe slot on most ATX and µATX motherboardsProfessional, Torx-based SecuFirm2+ mounting system for Intel LGA1851, LGA1700, LGA200, LGA115x (LGA1150, LGA1151, LGA1155, LGA1156) & AMD AM5, AM4Further improved second-generation NT-H2 thermal compound for optimal overall cooling performanceRecommended for CPUs with low to moderate heat dissipation (see CPU compatibility list), e.g. Intel 285K, 265K, 245K or AMD Ryzen 7900, 7700, 7600, etc.CPU Socket Compatibility Intel LGA2066, LGA2011-0 & LGA2011-3 (Square ILM), LGA1700 (), LGA1200, LGA1156, LGA1155, LGA1151, LGA1150 & AMD AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+ (backplate required), AM4