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How Is Breaking The 4 GHz Barrier Possible? Continued

A 4.1 GHz Dual Core at $130 - Can it be True?
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The sSpec number is the best way to identify the Pentium D 805.

A CPU goes through many steps during the production process, which is why it also obtains a 2D-identification code.

To tell processors apart, each particular model is endowed with a special number. A version update isn't the only identifying characteristic when it comes to distinguishing among CPUs with the same processor name and clock speed, so CPUs may only be uniquely identified according to a group identifier, as with the sSpec numbers mentioned in the preceding table. Intel wants users to become familiar with these specification group numbers, which is why the company includes this information on the box the CPU is packed inside, as well as on the outside of the physical CPU device itself.

The last five symbols in the product code, which appear on the right side of the retail box, are how users can obtain the specification group number.

Because the 805 processor is labeled with the latest B0 core version but is identified only as a CPU with the specification number SL8ZH, anybody who wishes can obtain a processor that's functionally equivalent to the one we tested for this story. Naturally, this doesn't constitute a 100% guarantee that you'll be able to achieve the same exact overclocking speeds we did, of course...

Summary
  1. A Budget CPU At Top Speeds
  2. A Budget CPU At Top Speeds, Continued
  3. Inside the Pentium D 805
  4. The Secret Of The Multiplier
  5. 133 MHz FSB: Perfect For Overclocking
  6. How Is Breaking The 4 GHz Barrier Possible?
  7. How Is Breaking The 4 GHz Barrier Possible? Continued
  8. How Is Breaking The 4 GHz Barrier Possible? Continued
  9. Three Theories Where The Customer Comes Out Ahead
  10. Which Memory Clock Speed Is Most Suitable?
  11. The Right Chipset
  12. Keeping Cool When Power Consumed Tops 150 Watts at 4.1 GHz
  13. Keeping Cool When Power Consumed Tops 150 Watts at 4.1 GHz, Continued
  14. Power Consumption Levels Top 200 W
  15. Power Consumption Levels Top 200 W, Continued
  16. Energy Saving Functions Lack C1E
  17. Risk-free Overclocking, Including Heat Protection
  18. Ready For The 64 Bit Future
  19. Tom's Hardware Guides Overclocking Diary
  20. 3.33 GHz Remains Stable At Standard Voltage Levels
  21. 3.33 GHz Remains Stable At Standard Voltage Levels, Continued
  22. Trouble Free Operation At 3.60 GHz
  23. At 3.8 GHz Some Minor Voltage Increases Become Necessary
  24. Water Cooling Is Recommended For 4.0 GHz
  25. Water Cooling Is Recommended For 4.0 GHz, Continued
  26. Overclocking To 4.10 GHz Boosts Basic Clock Speed By 54 Percent
  27. Overclocking To 4.10 GHz Boosts Basic Clock Speed By 54 Percent, Continued
  28. Will The System Boot At 4.3 GHz?
  29. Benchmark Results Show Performance Increases Of Up To 54 Percent
  30. 3D, Continued
  31. 3D, Continued
  32. Video Editing / Video Encoding
  33. Video, Continued
  34. Video, Continued
  35. Audio Encoding
  36. Office Applications
  37. Office Applications, Continued
  38. Parallel Applications - Multitasking
  39. Synthetic Benchmarks
  40. Synthetic Benchmarks, Continued
  41. Synthetic Benchmarks, Continued
  42. Synthetic Benchmarks, Continued
  43. Summary Overview: Who's The Winner?
  44. Conclusion: The 4.1 GHz Dual Core Delivers Peak Performance For Pocket Change
  45. Conclusion, Continued
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