I currently have the 3500 but I think Im going to need some more grunt soon to be able to play the newer games. Will the 4600 Dual make much of a difference? My K8N Neo2 will take the 4800 dual but im finding the 939 version very hard to find. I recently emailed the OcUK staff about the 4200x2 but they said dont bother, Id be better off with a new system.