2004-12-XX Nvidia nForce4 Multiprocessing chipset for up to 8-way sytems with AMD socket 754, 939 and 940 processors. Supports 32 PCI-E lanes, 5 PCI slots, 2 Gbit Ethernet ports, 8x S-ATA, 6x P-ATA, RAID, 10x USB 2.0. Also known as CK8-04. The A03 stepping also supports 1GHz HT support, but A02 only 800 MHz.
Four different versions to emerge: nForce 4, nForce 4 Ultra, nForce 4 SLI and nForce 4 Pro. Said to support S-ATA II.