Hewlett-Packard HP has designed four different chipsets for Itanium 2: zx1, sx1000, zx2 and sx2000. All support 4 sockets per chipset, but sx1000 and sx2000 support interconnection of up to 16 chipsets to create up to a 64 socket system. As it was developed in collaboration with Itanium 2's development, booting the first Itanium 2 in February 2001, zx1 became the first Itanium 2 chipset available and later in 2004 also the first to support 533 MT/s FSB. In its basic two-chip version it directly provides four channels of DDR-266 memory, giving 8.5 GB/s of bandwidth and 32 GB of capacity (though 12 DIMM slots). In versions with memory expander boards memory bandwidth reaches 12.8 GB/s, while the maximum capacity for the initial two-board 48 DIMM expanders was 96 GB, and the later single-board 32 DIMM expander up to 128 GB. The memory latency increases by 25 nanoseconds from 80 ns due to the expanders. Eight independent links went to the PCI-X and other peripheral devices (e.g. AGP in workstations), totaling 4 GB/s.
hewlett-packard hp has designed four different chipsets for itanium 2 zx1 sx1000 zx2 and sx2000 all support 4 sockets per chipset but sx1000 and sx2000 support interconnection of up to 16 chipsets to create up to a 64 socket system as it was developed in collaboration with itanium 2's development booting the first itanium 2 in february 2001 zx1 became the first itanium 2 chipset available and later in 2004 also the first to support 533 mt/s fsb in its basic two-chip version it directly provides four channels of ddr-266 memory giving 85 gb/s of bandwidth and 32 gb of capacity (though 12 dimm slots) in versions with memory expander boards memory bandwidth reaches 128 gb/s while the maximum capacity for the initial two-board 48 dimm expanders was 96 gb and the later single-board 32 dimm expander up to 128 gb the memory latency increases by 25 nanoseconds from 80 ns due to the expanders eight independent links went to the pci-x and other peripheral devices (eg agp in workstations) totaling 4 gb/s