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Vig390s Motherboard Manual V1.0
15
Intel® E7525 chipset (Northbridge)
Intel® E7525 Memory Controller Hub (MCH) chipset, the next generation Intel® dual-
processor (DP) workstation and server chipset technology, offers increased graphics
performance, reduced power consumption, and improved platform reliability and
system manageability.
The Intel® E7525 Chipset MCH is the central hub for all data passing between the
core system elements: processors, memory, PCI Express x16 graphics, PCI Express
I/O and legacy I/O subsystems. It supports dual Intel Xeon processors with 1MB L2
cache over the 800 MHz system bus interface, delivering bandwidth up to 6.4
GB/second. The MCH also supports all of the Intel Xeon processor features, such as
Hyper Threading technology, Enhanced Intel SpeedStep Technology, Intel EM64T
and Streaming SIMD Extensions 3 (SSE3) Instructions.
The PCI Express x16 interface supports a total bandwidth of 8 GB/second (4
GB/second per direction) and directly attaches the MCH to a variety of third-party
graphics adapters. A variety of Intel and third-party I/O solutions communicate
directly with the MCH through the PCI Express x8 interface. The Intel E7525 MCH
has one PCI Express x8 interface that can be bifurcated into two x4 interfaces for
additional configuration flexibility. The bandwidth of the PCI Express x8 is up to 4
GB/second.
The legacy I/O connects to the MCH through the Intel Hub Interface architecture at
256 MB/second. There are two I/O controller hub options: the Intel 82801ER I/O
Controller Hub (ICH5R) and the Intel 6300ESB I/O Controller Hub.
Figure 8: E7525 Block Diagram