core i5 760
gigabyte p55 ud3p
g skill ripjaws 4 gig ram
havnt decided on a psu yet but it will prob be a good coolermaster or corsair unit
23 inch screen
I just traded my 460 for a 470 and it's a great card. Never owned anything but Nvidia.
You should always post your full system specs including OS when creating a forum thread to ask for advice, if for no other reason than as a courtesy to others.