DFI NF4 SLI INFINITY User Manual page 12

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Introduction
PCI Express
PCI Express is a high bandwidth I/O infrastructure that possesses
the ability to scale speeds by forming multiple lanes. The system
board currently supports the physical layer of x1 and x16 lane
widths.
The x1 PCI Express lane supports transfer rate of 2.5 Gigabytes
(250MBbps) per second. The PCI Express architecture also provides
a high performance graphics infrastructure by enhancing the capability
of a x16 PCI Express lane to provide 4 Gigabytes per second
transfer rate.
CPU Overheat Protection
CPU Overheat Protection has the capability of monitoring the CPU's
temperature during system boot up. Once the CPU's temperature
exceeded the temperature limit pre-defined by the CPU, the system
will automatically shutdown. This preventive measure has been added
to protect the CPU from damage and insure a safe computing
environment.
DDR
Double Data Rate SDRAM (DDR SDRAM) is a type of SDRAM
that doubles the data rate through reading and writing at both the
rising and falling edge of each clock. This effectively doubles the
speed of operation therefore doubling the speed of data transfer.
6-channel Audio
The audio jacks at the rear panel will support 6-channel audio only
when the audio utility is configured to support this function. The mic-
in at the rear will be disabled. Use the front audio's mic-in jack.
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