Delta 23-1238-02 120 x 120 x 38Mm High Speed Ball Bearing Fan 3-Pin Connector 12VDC, 4 Amp. Max., 48W Ultra High Speed 5500 RPM, 252.85 CFM, 66.5 dBA Dimensions:120 x 120 x 38mm, Ball Bearing 3-pin TAC connector Please make sure you understand the specifications before placing order. This is a extremely powerful fan and it provides tremendous amount of cooling fan at the expense of very high noise level. Please make sure your power supply can provide enough power for this cooling fan.