hey ppl......
i want to upgrade my rig....as undercover is not running properly on my current rig

my current rig
-----------------

amd 3800x2 dual core @ 2.2 ghz
1 gb corsair value select @ 400 mhz
a8ne mobo
7900gt 256mb card
460w vantec true power psu

i wan to change only above 4 things....wont change psu if not required

as i wil be using my pc juz for 1 yr , i don wan to spend too much......something like 20 k

juz keep in mind while giving advice that will my 460w vantec supply b able to take the load.......its true power neways

also hw much can i expect for my old rig???? that price can be added on 20 k


thx a lot ppl