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  15. Hva betyr "J'n" på noen Intel prosessorer?

    i Prosessorer

    Skrevet

    Intel Ships Processors with Enhanced Security Capabilities

     

    Intel Corp., the world's leading maker of microprocessors, chipsets and network

    components, Monday said it had been shipping central processing units with

    security capability called XD-bit for some time, while a number of retailers

    began to supply the chips to end-users. áAll the [microprocessor] parts with the

    á-Jö designator have XD bit and have been shipping for several weeks now,ö an

    Intel's spokesman told X-bit labs. Execute Disable bit a security feature that

    protects certain system memory data regions from insertion and execution of

    potentially harmful code, that is also referred as NX-bit and works only in

    conjunction with Windows XP operating systems that feature Service Pack 2.

    Execute Disable bit allows the processor to classify areas in memory by where

    application code can execute and where it cannot. When a malicious worm attempts

    to insert code in the buffer, the processor disables code execution, preventing

    damage or worm propagation. To provide end-to-end no execute (NX) coverage,

    Intel already released XD-enabled chips for workstations, and other server

    products beginning in late Q3 2004. Desktop products are now shipping, with

    system availability in Q4 2004. Mobile processors will begin shipping in late Q4

    2004, with system availability in Q1 2005. áWe did not make any official

    announcement on the XD bit enabled processors,ö another Intel representative

    said. Akiba PC Hotline web-site reports that the first batch of Intel Celeron D

    340J, 335J, 330J and 325J has made it to the retail. End-users should get the

    revamped chips at approximately the same or slightly higher cost compared to

    versions without XD bit. Intel said only Intel Celeron D chips in LGA775

    packaging support XD bit technology, furthermore, BIOS and operating system of

    the system should support the tech to enable it. Advanced Micro Devices, another

    leading maker of microprocessors, has been shipping AMD Opteron and AMD Athlon

    64 central processing units with no execute bit (NX-bit) support since April and

    September, 2003, respectively. Intel first introduced its XD-enabled processor ó

    the Itanium ó in 2001.

     

    Puuuh,langt innlegg,orket ikke redigere......

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