Kontron COMe-cXLi2 - Manual (Page 50)

Kontron COMe-cXLi2 User’s Guide
www.kontron.com
44
5 Special Features
5.1 Hyper-Threading
Hyper-Threading (officially termed Hyper-Threading Technology or HTT) is an
Intel-proprietary technology used to improve parallelization of computations
performed on PCs. Hyper-threading works by duplicating certain sections of
the processor—those that store the architectural state -- but not duplicating
the main execution resources. A hyper-threading equipped processor can appear
to be two "logical" processors to the host operating system, thus allowing
the operating system to schedule two threads or processes simultaneously.
Hyper Threading Technology support always depends on the operating system.
5.2 Enhanced Speedstep Technology
The Intel® Atom Processor Z520 supports the Intel® Enhanced SpeedStep™
technology, which automatically switches the processor between maximum
performance mode and battery-optimized mode, depending on the needs of the
application being run. Speedstep technology lets you optimize the system
performance to match application requirements. When powered by a battery or
running in idle mode, the processor drops to lower frequencies (by changing
the CPU ratios) and voltage to conserving battery life while maintaining a
high level of performance. The frequency is set back to high automatically,
allowing you to customize performance.
Note: To use Enhanced SpeedStep™ technology, you need an operating system
that supports it.
Disabling Speedstep in the BIOS enables manual control of CPU performance.
You can set the CPU performance state in the BIOS setup or use third-party
software to control CPU performance states.
5.3 SDCard Interface (SDIO)
SD card is a standard for removable memory storage. It is designed and
licensed by the SD Card Association (http://sdcard.org). The card form
factor, electrical interface, and protocol are all part of the SD Card
specification. The US15WPT system controller hub supports up to three SDIO
interfaces. On the COMe-cXLi2 COM the first interface, SDIO#0, is used for
the onboard microSD Card socket. The second port, SDIO#1, provides the SD
card interface and shares pins with the GPIO signals to the baseboard. SDIO#3
is not used and is deactivated.