Seasonic S12 II 500W
 

As the predecessor of the widely successful Seasonic S12, nothing
short of excellence would suffice. As we have seen today, Seasonic's S12II
500W has lived up to its expectation. Priced only slightly more than $100,
the S12II 500W is a great buy for those who are looking for a silent high
end power supply for a mid ranged system.

http://www.overclockersonline.net/in...icles&num=1321