Intel 45nm E-0 stepping changes unveiled

Posted on Saturday, May 31 2008 @ 3:20 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

About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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