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Intel Core i7 4770K Review


Intel Core i7 4770K Testing:

Testing Intel's Fourth Generation Core i7 4770K processor will involve 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 game play, 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 AMD Catalyst drivers for the XFX HD R7970. 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: Socket 1150


Testing Setup: AMD 


Testing Setup: Intel Socket 2011


Testing Setup: Socket 1155


Comparison CPUs:



Overclocked settings:

  • Processor: Intel Core i7 4770K 4.7GHz 47 x 100
  • GPU :  HD 4600  15x  1500MHz


Overclocking the Fourth Generation Core i7 processors is a bit of the same but a bit different from past Core series processors, in that you still have bclock and bclock ratio adjustments that are possible and can yield decent gains in clock speed. At a preview event I was able to see the wide range of clock speeds that the Core i7 4770K can deliver. We saw everything from 4.8GHz capable chips with great memory controllers to the bottom of the barrel dregs that were not going to push anything past 4.3GHz. Thankfully the sample I have is on the higher end of the median range and seems to like between 4.6 and 4.7GHz.

As far as overclocking was concerned I was able to use the clock ratio method successfully but could not quite get the bclock method down in a short time frame. Even so I set the overides on the board to the max levels and adjusted the bclock ratio to 47 with an offset voltage of .20mv on the cores and integrated voltage regulator that gave me a stable 4.7GHz.

As we saw with Ivy Bridge when you pack more transistors into a small die you get a heat load that grows quickly in a small space. In that respect you will need better than air cooling to get decent clock speeds out of the Core i7 4770K. Even with the higher than recommended 1.2475v I was able to keep it in the mid to high 80 °C range with some spikes into the 90 °C range under load. For that reason alone I skipped the H100 for my overclocking tests and went to a simple D5/240 Rad setup. Overclocking the GPU was interesting as well with a maximum clock speed on the IGP of 1500MHz or a good 250MHz bump over the baseline dynamically controlled up to 1250MHz maximum. This yielded nice improvements over the stock numbers in 3DMark 11.

BIOS overclocking on this board was a bit challenging but you can use Intel's Xtreme tuning utility from within the OS if the BIOS is a bit harsh for you. It's interesting but not quite as intuitive as others. If overclocking is not on your plate you do see a benefit without even knowing it with Intel's Turbo Boost 2.0 technology that dynamically increases the clock speed when you need it the most to improve performance by bumping the clock speed to 3.9GHz.




Maximum Core Clock Speed:

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




  • Scientific & Data:
  1. Apophysis
  2. WinRAR
  3. Geekbench 2.1
  4. Bibble 5
  5. Office 2007 Excel Number Crunch
  6. POV-Ray 3.7
  7. ProShow Gold
  8. HandBrake .9.8
  9. Sandra 2012 
  10. AIDA64 2.60
  11. Cinebench 10 & 11.5
  12. HD Tune 4.60
  13. PC Mark 7
  • Video:
  1. Metro 2033
  2. DiRT 3
  3. 3DMark 11

Well we have our lineup and maximum stable overclocks. Time to see what results we get from the Fourth Generation Haswell.

  1. Intel Core i7 4770K Introduction & Closer Look
  2. Intel Core i7 4770K Closer Look: Intel Extreme DZ87KLT-75K
  3. Intel Core i7 4770K Specifications & Features
  4. Intel Core i7 4770K Testing: Setup & Overclocking
  5. Intel Core i7 4770K Testing: Apophysis, WinRAR, GeekBench, Bibble 5
  6. Intel Core i7 4770K Testing: Office 2007, POV-Ray, ProShow Gold, Handbrake
  7. Intel Core i7 4770K Testing: SiSoft Sandra, AIDA 64
  8. Intel Core i7 4770K Testing: Cinebench, HD Tune, PCMark 7
  9. Intel Core i7 4770K Testing: Metro 2033
  10. Intel Core i7 4770K Testing: DiRT 3
  11. Intel Core i7 4770K Testing: 3DMark 11
  12. Intel Core i7 4770K: Upcoming Reviews
  13. Intel Core i7 4770K Conclusion
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