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Intel 6th Generation Core i7 6700K Review


Intel 6th Generation Core i7 6700K Testing:

Rumours have it that Intel's Skylake processors deliver an up to 29% performance increase over previous generation processors. To validate that level of performance, I will be running it and its comparison products through OCC's test suite of benchmarks, which include both synthetic benchmarks and real-world applications. The gaming tests will also consist of both synthetic benchmarks and actual gameplay, in which we can see if similarly-prepared setups offer any performance advantages. The system will receive a fully updated, fresh install of Windows 7 Professional 64-bit edition, in addition to the latest chipset drivers for each board and GeForce drivers for the NVIDIA GTX 770. To ensure as few variables as possible, all hardware will be tested at their stock speeds, timings, voltages, and latencies, unless otherwise stated. Turbo Boost will be disabled on all processors to make a fair comparison without skewing results. After stock speed testing, each processor will then be overclocked as much as possible, while still maintaining full stability.


Testing Setup: Intel (Socket 1151)


Testing Setup: Intel (Socket 1150)


Testing Setup: Intel Socket 2011 V-3


Testing Setup: Intel Socket 2011


Testing Setup: AMD (Socket AM3+)



Overclocked settings:

  • Processor: Intel Core i7 6700K 4760MHz 101.3MHz x 47


The ease with which this platform overclocked was actually refreshing in more than a couple ways. First off was that I did not run into the major thermal obstacles that were present with Haswell and Devil's Canyon. Even pushing 1.365v, the temperatures stayed reasonable, barely topping 72 °C on the hottest core. This in itself is a win for Intel with this latest SKU. With thermal headroom to spare, it seems that both Broadwell and Skylake now seem to like a bit more core voltage to up available margin.

At stock speeds, the motherboard set 1.24v to the core, so using a maximum of 1.365v to the core, 1.30 to the ring bus, and 1.30 on the memory, I pushed the core ratio and ring ratio up to see what the limits were. As it turns out, they were much higher than I expected at 47 on the core and 46 on the ring ratio. All results better than any of my Haswell chips. It seems the higher memory speed does not come with a big hit to stability or the ability to even boot using a higher ring ratio coupled with high speed memory. Haswell had definite limits and so does the Core i7 6700K. Using a 47 ring ratio, I could not get the system to boot at all, leaving me the only option of pulling back to a ring ratio of 46.

Using the same voltages, I started bumping the bclock up from the 4700MHz I set and settled at 101.3MHz. Not because that was as far as it would go, it's just the combination of running any higher on the core clock would cause stability issues when the clock speed limits using 1.365v as my max applied voltage. At only 760MHz above the base core clock speed, the overhead is not as significant on a percentage basis as that seen on some of my other chips, but this 6th generation Core i7 6700K is one of the best I have used in a while. Your mileage my vary, but 4.76GHz is a nice solid stable speed. My clock speed is available for screen shots, but I like to look for a stable speed rather than a benchmark stable result.



Maximum Core Clock Speed:

Each CPU has been tested for stability at the listed overclocked speeds. These clock speeds will represent the level of performance shown by the overclocked scores in the testing.




  • Scientific & Data:
  1. Apophysis
  2. WinRAR
  3. Geekbench 3
  4. Bibble 5
  5. Office 2010
  6. POV-Ray 3.7
  7. ProShow Gold
  8. HandBrake .99
  9. Sandra 2014 SP2
  10. AIDA64
  11. Cinebench R15
  12. X.264 Benchmark
  13. PC Mark 8
  • Video:
  1. Metro: Last Light
  2. Batman: Arkham Origins
  3. 3DMark

Well, we have our lineup and maximum stable overclocks for each respective CPU; time to see what results we get.

  1. Intel 6th Generation Core i7 6700K: Introduction & Closer Look
  2. Intel 6th Generation Core i7 6700K: Specifications & Features
  3. Intel 6th Generation Core i7 6700K Testing: Setup & Overclocking
  4. Intel 6th Generation Core i7 6700K Testing: Apophysis, WinRAR, Geekbench, Bibble 5
  5. Intel 6th Generation Core i7 6700K Testing: Office 2010, POV-Ray, ProShow Gold, Handbrake
  6. Intel 6th Generation Core i7 6700K Testing: SiSoft Sandra, AIDA 64
  7. Intel 6th Generation Core i7 6700K Testing: Cinebench 15, X.264, PCMark 8
  8. Intel 6th Generation Core i7 6700K Testing: Metro: Last Light
  9. Intel 6th Generation Core i7 6700K Testing: Batman: Arkham Origins
  10. Intel 6th Generation Core i7 6700K Testing: 3DMark
  11. Intel 6th Generation Core i7 6700K Testing: IGP Performance
  12. Intel 6th Generation Core i7 6700K: Conclusion
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