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Intel® 7300 Chipset Memory Controller Hub Datasheet

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Intel® 7300 Chipset Memory Controller Hub Datasheet

The Intel® 7300 Chipset Memory Controller Hub (MCH) Datasheet documents the features, ballout, and registers of the Intel® 7300 Chipset.
The Intel® 7300 Chipset is paired with the Dual-Core Intel® Xeon® Processor 7200 Series and Quad-Core Intel® Xeon® Processor 7300 Series and is comprised of the Intel® 7300 Chipset Memory Controller Hub (MCH) , the Intel® 631xESB/632xESB I/O Controller Hub , and the I/O subsystem. The platform is targeted for the multiprocessor server space. The MCH is configured for symmetric multiprocessing across four independent front side bus interfaces that connect to the Dual-Core Intel® Xeon® Processor 7200 Series and Quad-Core Intel® Xeon® Processor 7300 Series. The quad independent front side bus architecture provides improved performance by allowing increased front side bus speeds and bandwidth. Each front side bus on the MCH uses a 64-bit wide, 1066 MHz data bus capable of transferring data at 8.5 GB/s for a total bandwidth of 34 GB/s. The MCH supports a 40-bit wide address bus, capable of addressing up to 512 GB of memory. The MCH is the priority agent for all four front side bus interfaces, and is optimized for one processor on each bus.
The MCH connects to up to 32 fully buffered DIMMs (four memory channels with up to eight DIMMs per channel). This provides a maximum theoretical bandwidth of 8.5 GB/s for writes 17 GB/s for reads when DDR2 533 MHz memory is used. When DDR2 667 MHz memory is used, the maximum theoretical write bandwidth is 10.7 GB/s and the maximum theoretical read bandwidth is 21.3 GB/s.
The MCH provides seven x4 PCI Express* interfaces and one x4 ESI interface to the Intel® 631xESB/632xESB I/O Controller Hub. If more bandwidth is desired, it is possible to configure x4 ports 2 & 3, 4 &5, 6 & 7 into single x8 ports. Each PCI Express port on the MCH provides 4 GB/s bidirectional bandwidth when configured as a x8 port or 2 GB/s bidirectional bandwidth when configured as a x4 port.

Read the full Intel® 7300 Chipset Memory Controller Hub Datasheet.