thanks for fast reply
my system specs are
3.4 Ghz ht Old 487 socket
1 gig ram
2* 250 gig Western Digital WD2500SE Caviar
Geforce 6800 GT 128 mb
Creative Audigy 2 ZS <-- might move to new build though
also When PSU's have a top fan that is facing down and pulling air upwards into the PSU correct ?