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Intel Core i7 5775C Review

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Intel Core i7 5775C Conclusion:

Looking at the 5th Generation Core i7 5775C, it is easy to see how the launch of this processor could easily be bypassed by the masses with a Z97 chipset board and a Haswell or Devil's Canyon processor already on board. With either of those processors, you most likely already have a discrete GPU that will deliver higher FPS at higher settings than the Core i7 5775C. However, there is a huge market that runs an integrated graphics solution that have been stuck with having to rely on, at best, the HD 4600 solution on the latest Haswell or earlier platforms to run their games.

While we get a drop in process size to 14nm with this processor, the really special part of the equation is the Iris Pro 6200 graphics processor stored on board. Going from 20 execution units on the HD 4600 to 48 on the Iris Pro 6200, a doubling of the ROPs and TMU, and the 128MB of eDRAM for much improved memory access, the Iris Pro solution is just that much better than anything Intel has given the user base before. In the synthetic tests, you see big gains in performance. In the games tested, it's even better. Using low to medium settings, Metro: Last Light can be played at 40FPS on average at 1680 x 1050, and just over 32FPS at 1920 x 1080 when you bump up the graphics core clock. There are discrete cards for sale that have a hard time delivering that kind of gameplay. If you need to run an integrated graphics processor, there is not a reason to skip a Broadwell processor.

While the integrated graphics are pretty impressive in their own right, the Core i7 5775C does a good job of delivering good clock per clock performance when compared to the Haswell-based Core i7 4770K. In just about every benchmark, the Core i7 5775C was on par with or delivering a higher performance level than the Core i7 4770K, all while running at least 200MHz slower at the max Boost clock.

That being said, Intel left some meat on the bone for the enthusiast when it came time to overclock the Core i7 5775C. A speed of 4.1GHz was not a problem for this core with nothing more than bumping the core clock multiplier to 41. Sweet and simple with nothing else needed. However, if you wanted a bit more, this chip loves to get fed a steady diet of voltage to make it happen, to a point. Up to 4.3GHz was rock solid using my 2400MHz Patriot memory kit by setting the core voltage up to 1.375v. Any higher and you could feed it voltage to get some benchmark stability, but that was it, so I stayed at 4.3GHz with a 40 cache ring ratio.

Surprisingly, the core was cool running using that high a voltage, never seeing the high side of 80 °C. Of course, this drives up the power cost, but really, does it matter for the overclocker? You can always run the processor at stock speeds and be happy with the low 65W rated power consumption and low temperatures that go along with running at stock speeds, or you can just throw caution to the wind. IGP overclocking was supported on the MSI Z97 Gaming 7, but mch like most of the current crop of Z97 boards, eDRAM overclocking was not fully up to speed yet. However, the GT3e core was able to run at 1300MHz all day long. A 1GHz overclock over the 3.3GHz base core clock is not bad when you think about it.

Offered up at $336, the Core i7 5775C caries a price premium when you look at the costs of a Core i7 4770K or Core i7 4790K. But you do get the best IGP going right now as a benefit. Considering the amount of casual gamers using an IGP right now, the upside for that market is wide open. Adding a lower end discrete card to the aforementioned processors only drives up costs higher.

When you get down to it, this is Intel's first truly impressive integrated solution. You can play AAA games as well as bump the settings up while playing games like WOW or League of Legends. For the hardcore gamer this will not be the option you are looking for, but the casual gamer can get their money's worth when paired with a Z97 motherboard.

 

Pros:

  • Cool running
  • Performance per clock
  • Iris Pro 6200 graphics
  • IGP performance

 

Cons:

  • Lower overclocking margin
  • Price point


 

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