Specifications:

Model: 109R1212H1011
Fan Size: 120mm x 120mm x 38mm
Speed: 2600 RPM
Airflow: 102.5 CFM
Noise: 39 dBA
Static Pressure: 64.7Pa (~6.6mm H2O)
Bearing: Ball bearing
Voltage: 12 V
Current: .52 Amp
Power: 6.24 W
Connector: 3pin w/ rpm monitoring
We strongly suggest you refer to your motherboard manual to make sure your Case Fan Headers can handle this fan before plugging it into your motherboard.

Description:

With an astounding pressure rating of 64.7Pa, the 120mm x 38mm Sanyo Denki San Ace 109R1212H1011 case fan is perfect for mounting on restrictive radiators (eg. BIX series) and heatercores.  In fact, based on overall performance, these 120mm x 38mm Sanyo Denkis are the number one recommended fans among water cooling enthusiast. At a reasonable 39dBA, these fans push a whopping 102.5 CFM!  The Sanyo Denki San Ace fans are regarded as having the quietest motor among its competitors; undervolting yields higher pressure and CFM ratings at noise levels other fan manufacturers can only dream of replicating. 

Although the 120mm x 38mm  Sanyo Denki comes with a 3pin fan tail, do not plug this fan directly into the motherboard fan header.  Petra's Tech recommends connecting the Sanyo Denki to a fan speed controller capable of handling 6.24w on a channel or purchasing a 3pin to 4pin connector for direct connection to the power supply.