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    Intel 45nm E-0 stepping changes unveiled

    Posted on Saturday, May 31 2008 @ 03:20:31 CEST by Thomas De Maesschalck


    This summer Intel will move some of its 45nm processors to the new E-0 stepping, this includes the Xeon 3110, Core 2 Duo E8400 and E8500. TC Mag has some info on what's new in the E-0 stepping:
    - New SSpec and MM numbers
    - CPUID will change from 0x10676 to 0x1067A
    - Power Status Indicator (PSI) is supported
    - PECI implementation change
    - New instructions added - XSAVE/XRSTOR
    - New ISA extension for save/restoring context of x87, SSE, and future processor state
    - New feature added - ACNT2
    - Improved mechanism for determining processor utilization. To be used for more efficient P-state determination.
    - Package change to Halide free package



     
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