Sibling Rivalry - Intel E6750 and Q6600 Overclocking Duel

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Overclocking III – Dual-Core E6750 at 3.40 GHz

In order to get the E6750, which runs at a default clock speed of 2.66GHz, to operate stably at 3.40 GHz, we had to increase the core voltage. We achieved this by increasing the voltage by a mere 0.0125 Volts, with the result that the processor completed our Prime95 tests without error on an FSB of 425 MHz (1700 QDR).

E6750 Q6600 Overclocking

In this configuration, the memory was set to 425 MHz, which corresponds to DDR2-850. The memory multiplier remains at 2.00x.

E6750 Q6600 Overclocking

We tested the processor’s stability using Prime95. Even at 3.4 GHz, our sample ran stably and flawlessly.

E6750 Q6600 Overclocking

Core 2 Duo E6750 @3.40 GHz
CPU Frequency3.40 GHz (+27.8 %)
FSB425 MHz (1700 QDR)
Core Voltage1.3625
Memory Multiplier2.00x
Memory FrequencyDDR2-850 (425 MHz)
Memory LatencyCL 4.0-4-4-12

 

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Summary
  1. E6750 or Q6600 – Which is the better choice?
  2. The Processors – E6750 or Q6600?
  3. Processor – G0 Stepping is a must
  4. Motherboard – Gigabyte or MSI with P35 chipset
  5. Highlights of the MSI Board – Affordable, Heatpipe on Board
  6. Highlights of the Gigabyte Board – More Features
  7. GEIL Memory – An Overclocking Natural
  8. Cooler - Zalman's CNPS9700LED is Ideal
  9. Looking at the Bottom Line – CPU, Cooler, Board, and RAM
  10. Overclocking I – Dual-Core E6750 at 3.00 GHz
  11. Overclocking II – Dual-Core E6750 at 3.30 GHz
  12. Overclocking III – Dual-Core E6750 at 3.40 GHz
  13. Overclocking IV – Dual-Core E6750 at 3.50 GHz
  14. Overclocking V – Dual-Core E6750 at 3.60 GHz
  15. Overclocking I – Quad-Core Q6600 at 3.00 GHz
  16. Overclocking II – Quad-Core Q6600 at 3.20 GHz
  17. Overclocking III – Quad-Core Q6600 at 3.30 GHz
  18. Overview of Core Voltages
  19. Power Consumption and Energy Cost – Less is more with Dual-Core
  20. Overclocking Yields 25 Percent Performance Increase
  21. Performance Winner – Q6600 Provides 5.3% More Performance
  22. Test Setup
  23. Software Configuration
  24. Benchmarks and Settings
  25. 3D-Games - UT2004, Prey
  26. 3D-Games - Quake 4, Warhammer
  27. 3D-Games - Supreme Commander, Serious Sam 2
  28. 3D-Rendering - Cinema 4D, 3D-Studio Max
  29. Applications - AVG, WinRAR
  30. Applications - Photoshop, PDF
  31. Applications - Deep Fritz
  32. Audio Encoding - iTunes, Lame
  33. Synthetic - Sandra CPU
  34. Synthetic - Sandra Memory
  35. Synthetic - Sandra Multimedia
  36. Synthetic - PC-Mark
  37. Synthetic - 3D-Mark
  38. Video Encoding - Xvid, Pinnacle Studio
  39. Video Encoding - Premiere, Mainconcept
  40. Video Encoding - HDTV, DivX
  41. Video Encoding - CloneDVD
  42. Conclusion - Intel Quad-Core and MSI P35 Neo2 get our Nod
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9 comments
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  • spuddyt
    so what you just said, is the newer stuff is better
  • dobby
    i dont know why they take 10 pages to show what can be said in 1 page + a few graphs
  • technogiant
    On top of that Crysis is meant to be very cpu dependant and prefers 4 cores - it's the way things are going
  • ilovemrdoe
    Hmm, if they'd have gone for a different motherboard they could have gotten the q6600 to 3.6 on air.
  • crisUK
    Dunno if you have a duff chip or mobo. I have a Q6600 and exactly the same cooler and I can do 3.41 GHz at stock voltage on a Gigabyte 965P-DS3P.
  • crisUK
    "Its stock clock speed is 2.4 GHz, which it operates at using a comparatively low core voltage of 1.3125 Volts – the lowest core voltage available for this chip"

    Wrong my Q6600 is 1.26V although it runs slightly higher in practice.

    http://i152.photobucket.com/albums/s197/criskeys/Quad.jpg
  • anqe
    I guess this shows how OC'ing can vary depending on luck. Even hand picking the best S numbers is no guarantee. A bit of luck (unless you have deep pockets) can be key.

    Fortunately for myself, my Q6600 is 1.28v core, and hits 3.6GHz with only slight bump.

    Indeed electron migration is a significant issue at high Vcore but realistically most of us overclocking are probably running 6-12 month cycles on our hardware (at least from my experience) and the cost of killing a mid range part every year against taking a top end part is still more cost effective.

    That's given only one CPU in the past 15 that I've OC'd have failed (possibly luck?) on me and that was due to a faulty voltage regulator on my motherboard :(
  • rune1980
    Very nice review/test. Highly informative. I was gonna buy a 6850 or a quad core but now im just gonna grab the low cost msi board and a 6750 and spent my cash elsewhere.
  • rune1980
    question, you end up recommending the MSI motherboard, but the test system states that you used the gigabyte for the test. Will i be able to get the same clocking abilities with the MSI?
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