Energy Efficiency: AMD vs. Intel

Energy Efficiency: AMD vs. Intel

Stepping 101: Telling an L from a B

As long as the processor is still in the retail package, the stepping can be identified by the specification number on the side of the box. Currently, there are only three spec-numbers for the L2 stepping. They are easy to remember, as they differ in only one letter and are easy to tell apart from others: they all begin with "SL9T".

As of this writing, the family of Core 2 Duo processors comprises nine different models, three of which can be identified as using the L2 stepping:

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E6700SL9ZFB22.66 GHz4 MB
E6700SL9S7B22.66 GHz4 MB
E6600SL9S8B22.40 GHz4 MB
E6600SL9ZLB22.40 GHz4 MB
E6420SL4ATB22.13 GHz4 MB
E6400SL9S9B22.13 GHz2 MB
E6400SL9T9L22.13 GHz2 MB
E6320SLA4UB21.86 GHz4 MB
E6300SL9TAL21.86 GHz2 MB
E6300SL9SAB21.86 GHz2 MB
E4300SL9 TBL21.80 GHz2 MB
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