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

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Hva er forskjellen mellom f.eks Intel P4 3.4GHz 550 og Intel P4 3.4GHz 550 J??

 

Hva betyr "J'en"??

[OlaOlablakken]

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......

[ADT]

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