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AirFriend International Co., Ltd.

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-B9 92mm fans, the compact NH-U9DO A3 cools Opteron processors up to a thermal design power (TDP) of 115W at minimum noise levels. Bundled with Noctua's industrial-grade NT-H1 thermal compound and fitting standard 4U chassis, the NH-U9DO A3 forms a complete premium quality package for quietly cooling AMD workstations and servers.

Caution: Due to its more compact design and quiet operation, the NH-U9DO A3 is approved only for processors with up to 115W thermal design power (TDP). Using the NH-U9DO A3 on higher TDP processors may be possible with increased case ventilation depending on the specific configuration but is not officially supported by Noctua.

NH-U9P Performance optimised design
The NH-U9DO A3 is based on Noctua's much acclaimed NH-U series which have received more than 300 awards and recommendations from the international press. Six heatpipes, a performance optimised fin stack and an enlarged contact surface suitable for socket G34 allow for further improved performance.
SecuFirm Supports G34, C32 and Socket F
Thanks to the new NM-A3 SecuFirm2™ mounting system that includes brackets with both 3.5" and 4.1" hole spacing, the NH-U9DO A3 supports Socket F as well as the newer G34 and C32 sockets.
Kit Can be turned by 90° for optimal compatibility and positioning
Noctua's NM-A3 SecuFirm2™ mounting system makes it possible to install the cooler rotated by 90° in order to allow for an optimal positioning of the cooler and to evade compatibility issues on dual socket mainboards.
Kit Drop-in replacement for standard AMD coolers
Screwing directly to the standard AMD backplate, the NM-A3 SecuFirm2™ mounting system makes the new A3 revision a true drop-in replacement. Choose the appropriate mounting brackets, fix the two spring screws and you're done!
NF-B9 2x NF-B9 92mm premium fan
Featuring advanced aerodynamic optimisations and Noctua's premium-grade SSO-bearing, the award-winning NF-B9 is renowned for its exceptional quietness and long-term stability. The dual fan configuration allows for increased performance and safeguarding against failure.
NT-H1 NT-H1 thermal compound
Noctua's much-acclaimed NT-H1 is a well proven pro-grade TIM solution that provides minimum thermal resistance, excellent ease-of-use and outstanding reliability, which makes it suitable for use in professional server and workstation environments.

適用平台:AMD G34, C32, F (3.5" & 4.1") 
高度(不含風扇):125 mm
寬度(不含風扇):95 mm
深度(不含風扇):71 mm
高度(含風扇):125 mm
寬度(含風扇):95 mm
深度(含風扇):95(掛單扇)/120 mm(掛雙扇)
重量(含風扇):540 g
重量(含風扇):630(掛單扇)/720 g(掛雙扇)
材質:銅 (CPU接觸散熱體底部及熱導管), (冷卻鰭片), 焊接點, 鍍鎳處理。

NF-B9 風扇*2
超低噪音轉接線Ultra-Low-Noise Adapter (U.L.N.A.)*2
低噪音轉接線Low-Noise Adapter (L.N.A.)*2

風扇型號: NF-B9-1600
尺寸: 92x92x25 mm
軸承: SSO-Bearing 磁穩軸承
轉速(+/- 10%): 1600 RPM
轉速: 1300RPM(+/- 10%) - 串接使用靜音L.N.A.降壓線時的轉速
轉速: 1000RPM(+/- 10%) - 串接使用超靜音U.L.N.A.降壓線時的轉速
風量: 30 CFM(64,3 m³/h)
風量: 22 CFM(52,6 m³/h)- 串接使用靜音L.N.A.降壓線時的風量
風量: 15 CFM(41,1 m³/h)- 串接使用超靜音U.L.N.A.降壓線時的風量
噪音值: 17.6 dB(A)
噪音值: 13.1 dB(A) - 串接使用靜音L.N.A.降壓線時的噪音值
噪音值: 7 .9dB(A) - 串接使用超靜音U.L.N.A.降壓線時的噪音值
風壓值: 1.61 mm H2O - 串接使用靜音L.N.A.降壓線時風壓值
風壓值: 1.09 mm H2O - 串接使用靜音L.N.A.降壓線時風壓值
風壓值: 0.64 mm H2O - 串接使用靜音L.N.A.降壓線時風壓值
輸入電壓: 1.32 W 
電壓範圍: 12 V
平均故障間隔時間: 大於15萬小時
製造商保固 6年