Im thinking about getting one of these cards my first question about my mobo running it has been answered, but i'd like to know how much my other components will make a difference, 1st off im running 2GB ram with a dual core 4600 athlon, audigy plat 2, and 200gig sata hdd on a 550watt psu, will the psu be ok with the other components currently installed and would the cpu prove to be to much of a bottleneck to not warrant buying the card?