Hi,
I have a PSU that is maybe 4 or more years old now.
It's an Antec Truepower Trio 650w, i'm pretty sure it's this one in the link http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story3&reid=1
System spec:
i5 750 @ 3.4Ghz normal voltage
4 sata HDD
4 x 4Gb 1600Mhz ram normal...