Intel Core i7-5775C Broadwell Processor Review

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Intel Core i7-5775C – Broadwell Gives 9 Series Boards Last Shot At Glory

Earlier this month Intel launched their 5th Generation Core ‘Broadwell’ processors for both desktop and laptop solutions. This processor series is the first to be built on the 14nm manufacturing process and is a ‘tick’ in Intel’s tick-tock cadence that they have been doing for many years. Broadwell was supposed to launch last year with the Intel 9 series of chipsets, but for reasons unknown to us, Intel delayed the launch of Broadwell. Intel came out with the Haswell refresh along with the Intel 9 series boards in 2014, but we all knew that Broadwell was supposed to be launching then. After much delay, Intel finally announced Broadwell processors on June 2nd with the announcement of ten Broadwell processors all at once. The only problem is that nearly three weeks later the processors still haven’t made it to the channel in any significant volume.

Since Intel delayed Broadwell by nearly a year, Broadwell processors are coming out just a couple months ahead of Intel’s upcoming Skylake processors that are ‘tock’ in the launch cycle. This means that the manufacturing process will remain at 14nm, but there were major architecture change. Rumor has it that Intel will be launching Skylake in August at Gamescom.  Intel Skylake processors will be launched in conjunction with the Intel 100 series of chipsets that feature new LGA1151 sockets and support for DDR4 dual-channel memory among other things.

This creates an interesting situation as Intel will have two different mainstream platforms to pick from summer if you are building a brand new system. You’ll be able to pick between using Broadwell with an Intel 9 series chipset board or you can go with Skylake with an Intel 100 series chipset board. The obvious choice for enthusiasts would be to go Skylake, but keep in mind that Skylake will likely be using DDR4 memory and that will drive the cost of a platform up. If you already have an Intel 8 series board and have been waiting on Broadwell to come out to upgrade your current platform, we might have some bad news for you. Most all of the board manufacturers that we talked to will not be updating their Intel 8 series boards UEFI/BIOS to support Broadwell. To be honest, even the latest Intel 9 series boards have really sketchy UEFI/BIOS revisions this very second and is likely one of the reasons now that Intel hasn’t opened the flood gates and let Broadwell out into the wild. The problem is that the board makers have moved on to develop the next-generation boards for that impending launch and are struggling to go back and update all the old boards. Broadwell has had an extremely rough time getting to market, but it is coming.

broadwell pricing

Intel announced ten Broadwell processors earlier this month and while that sounds like a ton of processors, only two are socketed LGA1150 Broadwell.   The two Broadwell LGA desktop processors are the Intel Core i7-5775C and the Core i5-5675C. Both parts are unlocked like the ‘K’ processors have been in the past. Intel never told us why they changed from ‘K’ to ‘C’ for these processors, but it’s likely because the Iris Pro Graphics 6200 solution was codename Crystal Well internally. Those processors were announced over two weeks ago, but they won’t be readily available in the channel until July. Since they are only now starting to become available for purchase and the reviews on those processors are few and far between. 

  • Intel Core i7-5775C – $366 – 4 physical cores with 8 total threads, a base clock speed of 3.3GHz and 3.7GHz Turbo, 6MB of L3 cache, and Iris Pro 6200 graphics
  • Intel Core i5-5675C – $276 – 4 physical cores with 4 total threads, a base clock speed of 3.1GHz and 3.6GHz Turbo, 6MB of L3 cache, and Iris Pro 6200 graphics

Intel’s flagship 5th generation desktop processor is the Core i7-5775C. The Intel Core i7-5775C processor (Intel ARK) is an unlocked Quad-Core, 3.3GHz processor with 6MB of L3 cache and 128MB of eDRAM. These clock speeds are lower than Intel’s highest-end unlocked Haswell parts, so if you are looking for raw CPU performance the Haswell processors are still the best choice. The Intel Core i7-4790K Devil’s Canyon ‘Haswell’ processor has a base clock of 4.0 GHz with a max turbo frequency of 4.4GHz for example. 

Intel Iris Pro 6200 Graphics

Both the Core i7-4774C and Core i5-5675 feature Intel Iris Pro Graphics 6200 with 48 execution units and 128 MB of eDRAM (L4 Cache) running at 1800 MHz, so integrated graphics performance should be greatly improved. The old Haswell processors had just 20 Execution units and no eDRAM, so there should be a night and day difference between Haswell and Broadwell with respect to integrated graphics performance. 

Broadwell CPU Die Shot

 

Intel Iris Pro 6200 graphics makes up over half of the processor die area it you add up the space of the processor graphics and the eDRAM controller. Intel says that Intel Iris Pro Graphics 6200 on Broadwell will give you the best gaming and video encoding ever seen on a socketed processor. If you are using discrete graphics the processor and graphics must share the eDRAM, but if you use discrete graphics all 128MB can be allocated for use by the four CPU cores.

Core i7-5775C CPU-Z

We managed to get our hands on an Intel Core i7-5775C processor and have spent the past week using and benchmarking the newest desktop processor from Intel. This processor idles at 800 MHz when your system is not being used and then can run at up to 3700 MHz depending on the workload you are doing. The Intel Core i7-5775C is just a 65W TDP processor thanks to having mobile roots. This is a far cry from the 84W TDP seen on the Intel Core i7-4790K processor, but keep in mind it tops out at 3700MHz and not 4400MHz!

 Intel Core i7-5775C Processor

Here is a look at the Intel Core i7-5775C processor and on the Integrated Heat Spreader (IHS) it has the clock speed shown on it without much else. Intel Core i7-5775C Processor Pins

Flipping the processors over you can see that the Intel Core i7-5775C has the usual capacitors that reside in the middle around the pins needed to operate in an LGA1150 socket.

Let’s take a look at how the Intel Core i7-5775C performs in our Intel Z97 test platform!

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  • deddoa

    I was expecting more from this. Integrated GFX performance is nice, but why would you buy a high end 1150 i5 or i7 and use integrated GFX. If the GFX are that important you would buy a discrete GPU, but if GFX aren’t important then you would buy a cheaper 4790K or 4770K, or more likely the non K parts and a H97 board. As for the cpu, seems 4790K is a better option at stock.

    On the plus side this may mean that AMD push out a console level APU to get back ahead of the game, it’s not like they can’t do it as they are already making the XB1 and PS4 APU’s. I doubt they will as they will likely drop the ball as they usually do, but it would be great for cheap gaming PC’s if they did and I bet they would sell like hot cakes, and god help them if the i3’s have this IGP boost. Anyway, I guess no upgrade this year for me then as my 4770K is sitting nice and stable at 4.7GHZ and these chips don’t seem to be worth the money even if it was overclocked to the same speed.

  • I love how in the gaming tests you guys just conveniently remove the i7 920 and the AMD APU’s so you can talk about broadwell keeping up with the “big boy” CPU’s.
    Because you don’t want to show that the APU’s and the 920 get virtually the same FPS as the extremely overpriced newer i7’s and that there is no reason to pay the premium?

    • Nathan Kirsch

      It’s because we dropped off the chips without integrated graphics support… There is no other ulterior motive there.

      • What?
        The APU’s all have integrated graphics and you guys are using dGPU’s to test anyway…
        Why don’t you put all the rest of the chips through the same gaming benchmarks to get a clear representation of where it sits.
        Instead of making it seem like its in a class of its own when literally the 920 is the only chip without integrated graphics.

        • Nathan Kirsch

          we have two pages of integrated graphics testing… We heard feedback from our readers that they wanted to see add-in discrete card performance as well, so we later added that. That is why not all the CPU’s were included. We just haven’t had the time to go back and re-test them all. All the testing doing with discrete GPUs have integrated graphics and we tested both iGPU and discrete on those particular chips.

        • Please test all the CPU’s with dGPUs to show subjective gains overall.

  • LionS7

    To be honest I like this CPU, but sadly I can’t afford it.

  • Mike

    It’s nice to see that Broadwell chip is a beast and it outperforms the Haswell 4790K for clock per clock performance and it’s cooler. Must buy!

  • FXi2

    x99 Broadwell cpu’s please 🙂
    @ Intel

    • Nathan Kirsch

      They are on the roadmap! Broadwell-E unless the cancellation rumors are true and they will skip it in favor of Skylake-E.

  • Nathaniel Graham

    The processor is almost as disappointing as the number of typos in this article. Thanks for the review though.

    • Nathan Kirsch

      Sorry for the typos! We run everything through the MS Word Spelling & Grammar check, but it doesn’t catch everything. Other than that we rely on peer editing and our readers is the last line of defense. Please e-mail me over the typos you see if you would like and I’ll get them fixed!

      • Persian Scientist.

        A computer that has been programmed by another man’s deceptive ability to spell check is entirely not accurate. Don’t rely on that damn thing.

  • Iluvatar Valinor

    Nice to see i7-920 in test results, has been working flawlessly ever since i got it, will upgrade to Skylake.

  • DougLord

    This would be amazing in a 5lb laptop.

  • anon

    I love to see the i7-920 in the tables! Given the performance can be considered linear up to about 4Ghz for this cpu, 4 (GHz) by its 2,66 base speed gives a 19,57*1,5=29,35 fps in handbrake.

    Ok a 2009 cpu mild oced, vs the top 2015 cpu (400Mhz less because its 3,3-3,6) gives and advantage in handbrake of 5 fps.

    Same situation with most cpu bench not involving encryption.

    Good job marketing department, because the RD department sucks.

    • Nathan Kirsch

      good points and it’s amazing how the super popular Core i7-920 is still hanging in there!

  • Geekosa

    Recommended Award.
    OMG ! Is it possible to recommend this CPU with this fucking crazy price ?

    • Nathan Kirsch

      For those looking for something with integrated graphics this is a damn good processor. In fact, I look forward to upgrading some of our Z77 systems with 3770K’s to Z97 systems with 5775C’s here for mainstream office use. Pricing isn’t too crazy… The tray pricing on the 4770K was $339 at launch. This processor is listed higher at $369, but that isn’t bad considering all the extra EU’s and eDRAM they built into the processor.

      • Geekosa

        In France the 4790K is 350 € and the 5775C is 420 €
        70 € is a huge difference ! The price of the 4790K never dropped, and the 5775C is less powerful, is launched one year later and is more expensive. How should we recommend it ?
        The 5775C should be at the same price than the 4790K.

        Do you realize ? This CPU is 90 € more expensive than the 4770K which is 2 years old, and isn’t more powerful.

        Recommend such a crap is like to agree to be whipped by a sado-masochist.

        • Nathan Kirsch

          Yeah, if there is an $80 difference you’d be better off going with a lesser priced Haswell processor and using that money for a discrete graphics card! Broadwell is recommended for those that don’t want a discrete graphics card. There is a reason it didn’t get a value award or the editor’s choice award. This card was recommended because it has the best integrated graphics performance for any CPU. That is a first for Intel and they deserve props on that.

        • anon

          I still dont get, anyway, who or recommended by who, would select an i7 top-of-the-line cpu because of its GPU capabilities. Even the poorest workstations wear a K600 GPU. This is all merchandise because they want to promote their GPU for the mobile / tablet market.

          All that die wasted in a gpu, really. Its the same core technology shrinked we had 5 years ago, and thus, more power efficient.

          Then you think, ok why i3 or i5 series, which is the target for the integrated GPU, dont have the top of the lane GPU chip on them. Basically because the lower tdp cpu would be a benefit for the gpu tdp. And you find they’ve got a crappy gpu as well.

        • Nathan Kirsch

          “All that die wasted in a gpu, really.” I guess maybe that is why all the initial batch of Intel Skylake processors will have just GT2 graphics?

        • Lindsay

          This is a 65W CPU. It should be compared to it to the equivalent 65W “S” Haswell SKUs.

        • Geekosa

          Nope.
          People buy unlocKed CPU for performance. They do not care about 20 W of consumption, but they care about 70 € for lower perf !

        • Billy Pistocco

          uggg..

      • xcore

        OC ignoring the the extra EU’s and eDRAM for the moment and take the time to realize that broadwell was a tick as in a shrink and yet we don’t see the usual 20% or greater generic speed bump with these….

        something tells me Intel have intentionally crippled 5775c broadwell to lower than 4770K default speeds just to help sell the real tock Skylake and its EU’s and reduced EU’s and eDRAM soon , and that’s a shame along with the lower eDRAM and missing AVX512 SIMD….

  • Anonymous

    CPU performance the same as Haswell.

    A10-7800 vs. i7-5775C graphics performance:

    28nm vs. 14nm
    DDR3 bandwidth starved vs. dedicated eDRAM
    TDP lowered vs. stock TDP

    And still the AMD manages to reach 70% of the performance? This just shows that Intel’s GPU arch is still light years behind compared to the likes of Nvidia or AMD. They really need to step up their game with Skylake if they want to have any chance against the upcoming 14nm FinFet HBM chips from AMD.

    • Carl

      For mass-buyers. you are right. For most enthusiast who will buy a discrete video card anyways, Intel is still the way to go.

      • Anonymous

        Yep, no questions asked, but the Haswell chip is better than this. And who knows what Zen will bring, maybe the race will be closer again. Intel isn’t pushing CPU performance at all, that gives AMD some time to catch up.

      • DougLord

        Intel is the way to go for everyone. When was the last time you saw someone selling a PC with AMD CPU?