Just bought a 6600Gt need PSU help

[atb1o1]

Hi i just bought a leadtek 6600GT AGP card and i'm about to buy a PSU next. The psu i'm going to get is the http://www.maxpoint.com/products/pow_supp/spec_pg/noisetaker2/index.htm#

the 425 Watt one.

The thing is..it has seperate 12v rails at 15A and 14A. What doest that mean? does it mean it has a combine of 29A on the 12v rail or 1 12v cable is 15A and the second 12v cable is 14A? is this Psu good enough to power the 6600GT AGP card?

I currently have the following in my case,

Intel P4 2.6G
1 120 gig HD
1 200 gig HD
1 CD burner
1 DVD burner
1 floppy drive
1 120m fan

Thank you!