What's the difference between NH-D15 and NH-D15S? : Noctua Knowledge Centre
NH-D15 ram clearance on itx boards : r/Noctua
Oddly-Specific PSA: G.Skill's Trident Z memory fits under a Noctua NH-D14 just fine, even though it is not listed for compatibility due to it's 44mm height : r/pcmasterrace
Noctua NH-D15 Chromax Black Dual 140 mm Fan CPU Air Cooler Intel LGA2066, LGA2011-0 & LGA2011-3, 1200, 1156, 1155, 1151, 1150 & AMD AM2, AM2+, AM3, AM3+, FM1, FM2, FM2+ (Backplate Required),