need help deciding!!!

which card is better a 7800gs agp8x or 7600gt agp8x also newegg says you need a Minimum of a 350 Watt power supply.
An available 4-pin Molex hard drive power dongle 

i have a 450 w psu but i dont know what a 4 pin molex is?

my spec is

amd athlon 64 3000+ 2.0ghz

1024 ram

current card is geforce fx 5500

which card is better a 7800gs agp8x or 7600gt agp8x also newegg says you need a Minimum of a 350 Watt power supply.
An available 4-pin Molex hard drive power dongle 

i have a 450 w psu but i dont know what a 4 pin molex is?

my spec is

amd athlon 64 3000+ 2.0ghz

1024 ram

current card is geforce fx 5500

colombianplaya5

the 7600gt it is then also one more question how do you overclock a graphics card?colombianplaya5

[QUOTE="colombianplaya5"]the 7600gt it is then also one more question how do you overclock a graphics card?SSJBen

[QUOTE="SSJBen"][QUOTE="colombianplaya5"]the 7600gt it is then also one more question how do you overclock a graphics card?colombianplaya5