Thanks for that, I might just bight the bullet and if it isnt good enough i'l just buy a new PSU.
If you decided to buy new psu whatever. I just wanted to say that you are wrong, GTX 460 1GB requires 24A! Where did you find out that it requires 38A?? And your psu have 30A, so it should power that card just like mine can... http://www.tomshardware.com/forum/307513-33-cooler-master-550w-real-power
What is your PSU model!? GTX 460 1GB in max load consumes 331W for hole system....