Intel Desktop Board D975XBX Technical Product Specification
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1.6 Discrete Serial ATA Interface (Optional)
As a manufacturing option, the board provides a Silicon Image Sil 3114 Serial ATA (SATA)
controller and four connectors (that support one device per connector) for SATA devices. These
connectors are in addition to the four SATA connectors of the ICH7-R/ICH7-DH SATA interface.
The Sil 3114 controller uses the PCI bus for data transfer and provides a maximum data transfer
rate of up to 1.5 Gbits/sec. The discrete SATA interface supports the following RAID levels:
• RAID 0
• RAID 1
• RAID 0+1
NOTE
Drives connected to these SATA connectors must be used in one of the RAID configurations listed
above. Single drive or non-SATA configurations are not supported with the discrete SATA
interface.
For information about Refer to
RAID levels Section 1.5.2.3, page 23
The location of the discrete SATA RAID connectors Figure 19, page 58
1.7 PCI Express Connectors
The board provides the following PCI Express connectors:
• One Primary PCI Express x16 (electrical x16 or x8) bus add-in card connector. The x16
interface supports simultaneous (full duplex) transfers up to 8 GBytes/sec. Single-ended (half
duplex) transfers are supported at up to 4 GBytes/sec.
• One Secondary PCI Express x16 (electrical x8) bus add-in card connector: The board provides
a PCI Express add-in card connector in the form of a physical x16 connector with electrical
routing of x8. This connector is an electrical equivalent of a PCI Express x8 bus add-in card
connector. This connector also supports x4 and x1 PCI Express add-in cards.
• One PCI Express x16 (electrical x4) bus add-in card connector: The board provides a PCI
Express add-in card connector in the form of a physical x16 connector with electrical routing of
x4. This connector is an electrical equivalent of a PCI Express x4 bus add-in card connector.
This connector supports x4 and x1 PCI Express add-in cards.
For optimum performance, observe the following recommendations for the PCI Express add-in card
connectors:
• If you are installing a single PCI Express Graphics card, install it in the Primary PCI Express
x16 (electrical x16 or x8) bus add-in card connector.
• If you are installing two PCI Express Graphics cards, install them in the Primary PCI Express
x16 (electrical x16 or x8) bus add-in card connector and the Secondary PCI Express x16
(electrical x8) bus add-in card connector.
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