Nvidia announced its new nForce4 family of PCI Express chipsets designed to 939-pin Athlon 64 processors. The basic version has one PCI-E x16 slot for graphics cards, three PCI-E x1 slots, four Serial ATA ports, two ATA-133 ports, RAID 0, 1 and 0+1, USB 2.0, AC97 audio, hardware firewall and Gigabit Ethernet. The nForce4 Ultra and SLI adds support for Serial ATA II (3 Gb/s), a secure networking engine called ActiveArmor and a new optimization application called nTune. The SLI version, as is shown by its name, includes Nvidia´s multi-GPU solution.