Sibling Rivalry - Intel E6750 and Q6600 Overclocking Duel

Power Consumption and Energy Cost – Less is more with Dual-Core

For our overall result, the consideration of these systems’ power consumption plays a major role. Since we had to increase the core voltage quite a bit during our overclocking experiments, this has a huge impact on a CPU’s power dissipation, which increases dramatically.

With both CPUs overclocked to their limit, the dual-core chip’s power consumption increases by 51.6%. Our quad-core’s results are a little higher, increasing by 58.3%.
Once both CPUs are put under a full load, the difference in power consumption between our two candidates becomes much more pronounced. While the dual-core model needs 62.6% more energy under load at its maximum clock speed, the quad-core draws a full 75.3% more compared to its default speed.

Energy Cost

In the end, the cost of an affordable overclocking system is not determined solely by the price of its individual components. The added performance goes hand in hand with higher power consumption – a price you pay in the form of your electric bill at the end of the year.

We base our calculations on an average usage scenario in which the computer runs for eight hours per day. Our measurements represent the entire system’s power consumption, including the power supply, graphics card, and sound card as well as the hard drive and the DVD-ROM. Since we are interested only in the power consumption of the processors, the graphics card is idle in all measurements.

A Core 2 Duo E6750 will cost you about €120 in electricity over the course of a year when running under load for eight hours a day. Overclocked, it will cost you an additional €21.60.

The bill is much higher for the Intel Core 2 Quad Q6600. Compared to its dual-core sibling, it eats about €20 worth more electricity, or €140. Overclocking does its part to drive the cost up even more, increasing the bottom line on your utility bill by another €42, for a total of €182.

  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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  • 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.
  • 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?