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Noctua's DO line of coolers has become a default choice when it comes to quietly cooling AMD Opteron CPUs. Upgrading both compatibility and performance, the new A3 model features Noctua's professional NM-A3 SecuFirm2™ mounting system that not only supports socket G34, C32 and F, but also allows to install the cooler turned by 90°. Thanks to six heatpipes, a performance optimised fin stack and its two premium grade NF-P12 120mm fans, the NH-U12DO A3 cools even the hottest high-end Opteron processors at minimum noise levels. Bundled with Noctua's industrial-grade NT-H1 thermal compound, the NH-U12DO A3 forms a complete premium quality package for quietly cooling AMD workstations and servers.



Socket compatibilityAMD G34, C32, F (3.5" & 4.1")
Height (without fan)158 mm
Width (without fan)126 mm
Depth (without fan)71 mm
Height (with fan)158 mm
Width (with fan)126 mm
Depth (with fan)95/120* mm
Weight (without fan)800 g
Weight (with fan)970/1140* g
MaterialCopper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Fan compatibility120x120x25mm
Scope of Delivery
  • 2x NF-P12 premium fan
  • Ultra-Low-Noise Adaptor (U.L.N.A.)
  • Low-Noise Adaptor (L.N.A.)
  • NT-H1 high-grade thermal compound
  • SecuFirm2™ Mounting Kits
  • Warranty6 Years


    Fan specifications
     
    ModelNoctua NF-P12
    BearingSSO-Bearing
    Blade geometryNine Blade Design
    Rotational Speed (+/- 10%)1300 RPM
    Rotational Speed with L.N.A. (+/- 10%)1100 RPM
    Rotational Speed with U.L.N.A. (+/- 10%)900 RPM
    Airflow92,3 m³/h
    Airflow with L.N.A.78,5 m³/h
    Airflow with U.L.N.A.63,4 m³/h
    Acoustical Noise19,8 dB(A)
    Acoustical Noise with L.N.A.16,9 dB(A)
    Acoustical Noise with U.L.N.A.12,6 dB(A)
    Input Power1,08 W
    Voltage Range12 V
    MTBF> 150.000 h



    Noctua
    22.11.2014 - TechSupportForum.com NF-A4x10 5V
    Test verdict: "In the end, the NF-A4x10, NF-A8 and NF-A9 fans comply with Noctua’s Premium Fan statement. Backed by an outstanding six year warranty, these fans should last a computer’s life time without you needing to replace them. With pricing starting at $18.95 for the NF-A8, $19.99 for the NF-A9, and $23.99 for the NF-A4x10, you can’t go wrong buying these fans." (Justin Vendette, TechSupportForum.com)
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    21.11.2014 - OCDrift.com NH-D15
    Test verdict: "There’s no doubting that the Noctua NH-D15 is a very decent air cooler. Noctua improved the shortcomings of the old flagship cooler NH-D14 by expanding the dual tower design and offer a much better memory compatibility, which allows for more memory kits with high-profile heatspreader to sit under the heatsink. The build quality is excellent with the heatsink’s aluminium fins soldered nicely onto the heatpipes. The SecuFirm2 mounting kit makes cooler installation easier and more secured." (Kevin Owi Kheng Him, OCDrift.com)
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    21.11.2014 - 59hardware.net NH-U14S
    Test verdict: "Il est tout d’abord apparu que le NH-U14S est un ventirad très bien conçu et qui doit être produit selon des canons très stricts, c’est tout du moins l’impression qu’on a en considérant sa qualité de fabrication générale. Puis, la phase de montage s’est montrée aussi facile que dans le cas des autres ventirads Noctua (et pour cause) et relativement rapide. Quant aux performances en refroidissement, elles sont, comme toujours pour l’instant chez Noctua (après trois tests plus que concluants), elles sont au-dessus de la mêlée et le tout dans un silence plus que relatif, à la hauteur de la réputation que le constructeur s’est patiemment forgée au fil des années." (Laurent Dessinguez, 59hardware.net)
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