i have a 450 watt zebronics sata plus(20 + 4 pin) psu....it has 20 amperes on the 12 volt rail....i know that 9600 gt needs 26 amps.....i think my system is a low end one.....-AMD athlon 64 X2 4200+(2.2 GHZ).....asus M2N-MX SE Plus motherboard....3 gb ddr2 ram(667 mhz each)....6150 se integrated graphics.....15 inch samsung samtron 55V monitor....xp pro 32-bit....how much power will these take from my psu?do all these take power from the 12 volt rail?how much would be left?will i get enough power for the 9600gt card...??