Fx 8320 from X6 1055t?

Newegg has the 8320 down to $130 right now and even though my x6 isnt slow by any means, would be a decent upgrade considering the price. My board takes am3+ with a beta bios, and i also have a msi 890fxa gd65 which does the same that will either house the x6 or the 8320 which currently has a x2 555. So wondering if u should buy and either use as my main cpu or in my backup pc? or else was thinking on getting the fx 4130 for $80 to replace the x2 even though its bulldozer.
 
my main pc i use for gaming mainly battlefield, crysis, CoD, bioshock, and some times some video converting, and running VMs, and the backup is just that used for backup or when my friend is over is paired with an old 5770, but is used quite a bit and but the x2 @3.6 isnt great for battlefield