First a little bit of information of Fanner group from their website :
“Fanner Group, global supplier of cooling solutions for the personal and networked
computer, with it's manufacturing facilities in Shen Zhen, China and offices
in The United Kingdom, Germany, The Netherlands, Japan, Taiwan and USA, offers a wide range of thermal products and accessories for the computer industry.”
|| 80x80x25 (L x W x H)
|| Ball bearing
|| 2700RPM +10%
|| 26. 5dBA
||3 pin connector+ 4 pin molex connector
Now what’s the difference between Sleeve and Ball bearing?
The biggest difference is the expected life time , Sleeve bearing fans have a life time of 30 000 hours and Ball bearing fans have around 50 000 life houres.
Another difference is that Sleeve bearing fans run on metal and oil only. Ball bearing fan run on small steel balls around the axle.