The 6cm CPU fan on the back of the QNAP TVS-h874 unit is extremely noisy. Is there a higher quality fan on the market that can do same or better job without
Amazon.com: 1x New Replacement Fans, Plug-and-Play, Compatible with QNAP FAN-4CM-R01 : Electronics
Amazon.com: Qnap 2900rpm CPU Fan Module for TVS-x82 and TVS-x82T : Electronics