There are 3 different I/O bridge chipset options on "AMD on AMD" server platforms. In addition, they all feature the AMD SP5100 Southbridge chipset.
Product Specifications - Northbridge
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SR5650
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SR5670
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SR5690
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Sockets Supported
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AM3/L1SP/C32/G34
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Processor interface
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Hyper Transport 3.0 (5.2GT/s)
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Multi-Processor Support
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Yes
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PCI Express®
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PCI Express® 2.0 v1.0
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Number of PCIe® Ports/engines
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22 lanes/
8 engines
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30 lanes/
9 engines
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42 lanes/
11 engines
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PCI Express® Hot Plug
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No
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Yes
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Virtualization
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AMD-Vi (IOMMU 1.2)
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Error Detection/
Isolation
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Hyper Transport error handling, PCIe® Advanced Error Reporting, PCIe® end-to-end Cycle Redundancy Check
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Interrupt handling
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Integrated I/O APIC
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NB-SB Interface
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x4 A-Link
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Max. TDP
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13W
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17W
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18W
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Max. Idle Power
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7.1W
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7.3W
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7.5W
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Process Technology
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TSMC 65nm
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Package
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29 x 29mm FCBGA
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Product Specifications - Southbridge
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SP5100
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USB ports
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12 USB 2.0 + 2 USB 1.1
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USB ports disabled
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Yes
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PCI Bus support
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PCI rev 2.3
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Serial ATA
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SATA 3.0Gb/s with AHCI 1.1
SW RAID Support via DotHill RAID Stack
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SATA Ports
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6 (can be independently disabled)
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Max. TDP
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4W
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Max. Idle power
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1W
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Process technology
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TSMC .13um
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Package
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528 ball FCBGA, 21x21mm, 0.8mm pitch
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