HP DL585 HP ProLiant DL585 G2 server technology - Page 4

The AMD-8132 HyperTransport PCI-X Tunnel provides two PCI-X bridges (see Figure 1). One 16-bit, 1-GHz HyperTransport interface connects to the CPUs, while the other 16-bit, 1-GHz HyperTransport interface connects to the downstream NVIDIA nForce® Professional 2050 PCI-E Bridge. The AMD8132 supports two PCI-X bridges operating at 100 MHz. One PCI-X bridge supports two 100-MHz expansion slots (one full length and the other half length). The other PCI-X bridge supports two NC371i gigabit Ethernet interfaces. Figure 1. Block diagram of DL585 G2 architecture NVIDIA nForce Professional 2200 and 2050 chipsets The DL585 G2 makes use of both the NVIDIA nForce Professional 2200 and 2050 chipsets to offer a large number of expansion slots for enhanced flexibility. The 2050 chipset connects to the AMD-8132 HyperTransport tunnel with a 16-bit, 1-GHz HyperTransport interface. The 2050 offers 20 lanes of PCI Express, which are divided in the DL585 G2 into three x4 slots and one x8 slot. The 2200 connects directly to the processors with an additional 16-bit, 1-GHz HyperTransport connection. In addition to supporting system devices and USB ports, the 2200 offers an additional PCI Express x4 slot and two PCI Express x8 slots. 4