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Foxconn 915P7AD-8EKRS User Manual

Page 40

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Chapter 2 Installation Instructions

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PCI Express Slots

PCI Express will offer the following design advantages over the PCI and AGP

interface:

-Compatible with existing PCI drivers and software and Operating Systems.

-High Bandwidth per Pin. Low overhead. Low latency.

-PCI Express supports a raw bit-rate of 2.5 Gb/s on the data pins. This

results in a real bandwidth per pair of 250 MB/s.

-A point to point connection, allows each device to have a dedicated connec-

tion without sharing bandwidth.

-Ability to comprehend different data structure.

-Low power consumption and power management features.

PCI Express will take two forms, x16 and x1 PCI Express slots. W hereas the x16

slot is reserved for graphic/video cards, the x1 slots are designed to accommo-

date less bandwidth-intensive cards, such as a modem or LAN card.

The difference in bandwidth between the x16 and x1 slots are not able to be

sure, with the x16 slot pushing 4GB/sec (8GB/sec concurrent) of bandwidth,

and the x1 PCI Express slot offering 250 MB/sec.

PCI Express x1 slots

PCI Express x16 slot

If a performance graphics card was installed into x16 PCI

Express slot, 2X12 pin power supply was strongly recom-

mended since that card may be drawn 75W power.

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