What's better?

Can we use the 2 cpus i listed. those r the ones im debating about buying. the question i need answer now is "but say like i would to save some money, would the 4 core do a pretty good job at the new games that come out?" (Since the 4core is currently cheaper then the 6 core)
 


Bulldozer is last gen AMD microarchitecture.

Piledriver is the new one.

Bulldozer was considered to be one of the biggest fails in computers ever. Piledriver is actually decent

Naming scheme:
Bulldozer - X1XX (ex. 4100)
Piledriver - X3XX (ex. 6300)

Either get the Phenom II I listed above, 4170 or Piledriver.

Or go with Intel i3.