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Intel Core i7 5775C Review


Intel Core i7 5775C Testing:

The drop to the 14nm process is only one part of the equation with the 5th generation Core i7 5775C. The other half of the equation is the introduction of Intel's Iris Pro 6200 graphics engine that replaces the HD 4600 seen in both the Core i7 4770K and Core i7 4790K. By increasing the Execution unit count from 20 on the HD 4600 to 48 on the Iris Pro 6200, doubling the ROP and TMU count to 8 and 16, respectively, the integrated graphics solution included with Broadwell sees a huge upside when it comes to video performance. When compared to the HD 4600 graphics in the 4th Gen processors, the Iris Pro 6200 series graphics should see an increase of up to 2x in gaming, up to 35% in co-processing power, and up to 20% compute performance. Intel's Iris Pro 6200 GT3e core in this processor is delivered with a core clock speed of 1150MHz with 128MB of eDRAM memory clock speed at 1800MHz set in the BIOS.

Below we get a look at just what the key hardware differences are. Let's take a quick look at what kind of performance margin this translates to.


SiSoft Sandra:

First up will be several tests in SiSoft Sandra's suite of tools. The first benchmark is the Video Shader Compute where I will measure using the aggregate result, followed by the Media Video / Audio Transcode test where I will use the Video Transcoding bandwith result.




For this test I ran the stock Cloud Gate test and measured the result and associated physics score. This DirectX 11 test is designed to measure the performance of mobile as well as lower end graphics solutions. This would include the performance of the integrated solution incorporated into the Core i7 4790K and Core i7 5775C. 




For my gaming tests, I will use a couple staples of my video card suite of games: Metro: Last Light and Batman: Arkham Origins. Each game will run through the benchmark tool for consistency using lower end settings. For Metro: Last Light, I will run in DX11 mode at a resolution of 1680 x 1050, Quality at Low, and Texture filtering at AF 4X, with Low Motion Blur, and Tesselation set to off. In Batman I will set Antialiasing to FXAA High and all other settings to off. With these settings, the integrated HD 4600 graphics struggled to deliver a playable frame rate, while the Iris Pro Graphics got the job done.



The picture painted by these results is pretty clear. In every test, including the gaming tests, the 5th Generation Core i7 5775C equipped with Intel's Iris Pro 6200 integrated graphics solution is going to usher in a new world of gaming for a large audience that in the past relied on an integrated solution for gaming and lived with the FPS limitations. The ability to play AAA titles, even up to 1920 x 1080, is amazing from an integrated solution. With a large section of the user base still running an integrated solution, this could be huge for Intel.

Currently, overclocking is enabled to grab that last little bit of performance. I found that, at this time, the BIOS on my test board did not allow me to overclock the 128MB of eDRAM, but the core was wide open and tapped out at 1300MHz for a 150MHz bump over the stock 1150MHz clock speed. Running the system through 3DMark, I was able to boost the scoring in the Cloud Gate test to over 14000 points for a substantial improvement.

  1. Intel Core i7 5775C: Introduction & Closer Look
  2. Intel Core i7 5775C: Specifications & Features
  3. Intel Core i7 5775C Testing: Setup & Overclocking
  4. Intel Core i7 5775C Testing: Apophysis, WinRAR, GeekBench, Bibble 5
  5. Intel Core i7 5775C Testing: Office 2010, POV-Ray, ProShow Gold, HandBrake
  6. Intel Core i7 5775C Testing: SiSoft Sandra, AIDA 64
  7. Intel Core i7 5775C Testing: Cinebench R15, X.264, PCMark 8
  8. Intel Core i7 5775C Testing: Metro: Last Light
  9. Intel Core i7 5775C Testing: Batman: Arkham Origins
  10. Intel Core i7 5775C Testing: 3DMark
  11. Intel Core i7 5775C Testing: IGP Performance
  12. Intel Core i7 5775C: Conclusion
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