The CPU Articles
- AMD's Smart Strike: Athlon X2 BE-2350
- Which is the Best Mainstream CPU?
- Remote PC Management with Intel's vPro
- Semiconductor Production 101
- The Gigahertz Battle: How Do Today's CPUs Stack Up?
- Dual Core Notebook CPUs Explored
- Does AMD's Athlon 64 X2 6000+ Have Any Kick Left?
- Extreme Overclocking
- Overclocking Guide Part 3: How To Gain 81% For $27
- 500 MHz FSB? Core 2 Duo Overtakes Core 2 Extreme
Energy Efficiency: AMD vs. Intel
7:12 AM - July 11, 2007 by
Bert Töpelt
Source: Tom's Hardware US – Keywords: energy, efficiency, intel, left, out, in, the, cold
Syndication:
Source: Tom's Hardware US – Keywords: energy, efficiency, intel, left, out, in, the, cold
Syndication:
Table of Contents:
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:
| Processor | Spec-Number | Stepping | Frequency | Cache |
|---|---|---|---|---|
| E6700 | SL9ZF | B2 | 2.66 GHz | 4 MB |
| E6700 | SL9S7 | B2 | 2.66 GHz | 4 MB |
| E6600 | SL9S8 | B2 | 2.40 GHz | 4 MB |
| E6600 | SL9ZL | B2 | 2.40 GHz | 4 MB |
| E6420 | SL4AT | B2 | 2.13 GHz | 4 MB |
| E6400 | SL9S9 | B2 | 2.13 GHz | 2 MB |
| E6400 | SL9T9 | L2 | 2.13 GHz | 2 MB |
| E6320 | SLA4U | B2 | 1.86 GHz | 4 MB |
| E6300 | SL9TA | L2 | 1.86 GHz | 2 MB |
| E6300 | SL9SA | B2 | 1.86 GHz | 2 MB |
| E4300 | SL9 TB | L2 | 1.80 GHz | 2 MB |
- Previous page Energy Efficiency: AMD vs. Intel
- Next page The retail box carries a product...