Akasa Power Plus 650W quad 12v rail PSU
 

The rear of the PSU has your basic layout with the extraction fan and the on/off switch in the usual places. Looking at the fan a bit closer you will notice its not an Akasa but the well known Sanyo Denki fan that has a claimed life of 40k hours at 60C. this fan is a auto thermal jobbie which means it will adjust the speed to the temps automatically.

Link: http://www.xtremecomputing.co.uk/review.php?id=158