Following with their tradition of adding at least a little something new to the mix, the nForce 4 chipset will be AMD's first PCI Express chipset for the Athlon 64 family of CPU's. Alongside the new PCI Express base of the nForce 4, other major features include that ability to use SLI with supporting NVIDIA graphics cards, a continuation of the built-in hardware firewall, methods to easily optimize the performance of your PC, and also methods for safely storing your electronic information.