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Noctua NH-U9 DX-4677 vs Noctua NH-U12S Redux — Head-to-Head (2026)

Side-by-side comparison. Specs, prices, user ratings, and our verdict.

Noctua NH-U9 DX-4677, High-Performance Server/Workstation CPU Cooler | Compact 125mm 4U Height, Low-Noise Cooling, 5 Heatpipes, For Xeon LGA4677 & LGA4710, Dual 92mm Fans, Rich Accessory Kit

Noctua NH-U9 DX-4677, High-Performance Server/Workstation CPU Cooler | Compact 125mm 4U Height, Low-Noise Cooling, 5 Heatpipes, For Xeon LGA4677 & LGA4710, Dual 92mm Fans, Rich Accessory Kit

$129.95
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vs
Noctua NH-U12S Redux, Quiet High-Performance Single Tower CPU Cooler | 158mm Height, Low-Noise Cooling, 5 Heatpipes, For Intel & AMD, 120mm Fan, 100% RAM Compatibility

Noctua NH-U12S Redux, Quiet High-Performance Single Tower CPU Cooler | 158mm Height, Low-Noise Cooling, 5 Heatpipes, For Intel & AMD, 120mm Fan, 100% RAM Compatibility

$59.95
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*Price sourced from Amazon.com. Price and availability subject to change.

Spec-by-spec

SpecNoctua NH-U9 DX-4677, High-Performance…Noctua NH-U12S Redux, Quiet High-Perfor…
BrandNoctuaNoctua
ModelNH-U9 DX-4677NH-U12Sredux
Voltage12 volts12 volts
MaterialCopper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel platingNickel plated Copper (base and heat-pipes), aluminium (cooling fins)
Unit Count1 Count1 Count
Noise Level30.6 db25.1 db
Part NumberNH-U9 DX-4677NH-U12Sredux
Material TypeCopper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel platingNickel plated Copper (base and heat-pipes), aluminium (cooling fins)
Cooling MethodAirAir
Number of Items11
Number of Packs1—
Air Flow Capacity96.3 cubic meter per hour—
Compatible DevicesDesktopDesktop
Included Components1 Packx

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