Yeah, just a 'little' 450% increase not to mention the enormous bottlenecking difference of architectural differences. In addition, the Athlon II X3 445 has an unlockable core; so whatever AM3 "880G" {sounds like a GA/MSI MOBO} chipset MOBO you choose just verify that it has Core Unlocker feature e.g. -> http://usa.asus.com/FeatureList.aspx?PG_ID=mKyCKlQ4oSEtSu5m&F_ID=7131
^+1... You will see in a difference in gaming with the newer platform but overall you will be impacted more by going with a more powerful graphics card (ATI 6000 series & Nvidia GTX 500/400 series) in combination with the CPU upgrade.
Yeah, just a 'little' 450% increase not to mention the enormous bottlenecking difference of architectural differences. In addition, the Athlon II X3 445 has an unlockable core; so whatever AM3 "880G" {sounds like a GA/MSI MOBO} chipset MOBO you choose just verify that it has Core Unlocker feature e.g. -> http://usa.asus.com/FeatureList.aspx?PG_ID=mKyCKlQ4oSEtSu5m&F_ID=7131