Centrino Mobile Technology
The world of mobile computing
has seldom been so exciting. Not, at least, for last 3 years when all that the
chip giants could think of was scaling down the frequency and voltage of the desktop
CPUs, and labeling them as mobile processors. Intel Centrino mobile technology
is based on the understanding that mobile customers value the four vectors of
mobility: performance, battery life, small form factor, and wireless connectivity.
The technologies represented by the Intel Centrino brand will include an Intel
Pentium-M processor, Intel 855 chipset family, and Intel PRO/Wireless 2100 network
The Intel Pentium-M processor
is a higher performance, lower power mobile processor with several micro-architectural
enhancements over existing Intel mobile processors. Some key features of the Intel
Pentium-M processor Micro-architecture include Dynamic Execution, 400-MHz, on-die
1-MB second level cache with Advanced Transfer Cache Architecture, Streaming SIMD
Extensions 2, and Enhanced Intel SpeedStep technology.
Intel Centrino mobile technology also includes the 855GM chipset components GMCH
and the ICH4-M. The Accelerated Hub Architecture is designed into the chipset
to provide an efficient, high bandwidth, communication channel between the GMCH
and the ICH4-M.The GMCH component contains a processor system bus controller,
a graphics controller, and a memory controller, while providing an LVDS interface
and two DVO ports.
The integrated Wi-Fi Certified
Intel PRO/Wireless 2100 Network Connection has been designed and validated to
work with all of the Intel Centrino mobile technology components and is able to
connect to 802.11b Wi-Fi certified access points. It also supports advanced wireless
LAN security including Cisco LEAP, 802.1X and WEP. Finally, for comprehensive
security support, the Intel PRO/Wireless 2100 Network Connection has been verified
with leading VPN suppliers like Cisco, CheckPoint, Microsoft and Intel NetStructure.
The Intel Pentium-M
processor is a high performance, low power mobile processor with several micro-architectural
enhancements over existing Intel mobile processors. The following list provides
some of the key features on this processor:
Supports Intel Architecture with Dynamic Execution
¢ High performance,
¢ On-die, 1-MByte second level cache with Advanced Transfer
¢ Advanced Branch Prediction and Data Prefetch Logic
Streaming SIMD Extensions 2 (SSE2)
¢ 400-MHz, Source-Synchronous processor
¢ Advanced Power Management features including Enhanced Intel
¢ Micro-FCPGA and Micro-FCBGA packaging technologies
The Intel Pentium-M processor is manufactured on Intel's advanced 0.13 micron
process technology with copper interconnect. The processor maintains support for
MMX technology and Internet Streaming SIMD instructions and full compatibility
with IA-32 software. The high performance core features architectural innovations
like Micro-op Fusion and Advanced Stack Management that reduce the number of micro-ops
handled by the processor. This results in more efficient scheduling and better
performance at lower power.
The on-die 32-kB
Level 1 instruction and data caches and the 1-MB Level 2 cache with Advanced Transfer
Cache Architecture enable significant performance improvement over existing mobile
processors. The processor also features a very advanced branch prediction architecture
that significantly reduces the number of mispredicted branches. The processor's
Data Prefetch Logic speculatively fetches data to the L2 cache before an L1 cache
requests occurs, resulting in reduced bus cycle penalties and improved performance.
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