CPU Reviews

Intel Core i7-5775C Review: More Than Meets the Eye

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5775caWhile it is important to recognize one’s strengths and leverage it as an asset, accepting shortcomings and working on them is equally as important for the whole is greater than the sum of its parts. For others, it is hard to admit weakness in a certain area and there are plenty of efforts placed on internal rationalization on why it is not a liability instead of facing the challenge head on. For a company as large and successful as Intel, addressing their lackluster performance in the graphics front was not a matter of if but a matter of when. Set to the rhythm of their “Tick, Tock” cycle, Intel’s move to the 14nm process brings about not only high levels of efficiency but also welcomes the greatest performance leap in Intel’s integrated graphics performance.

Compatible with 9-series chipsets and conforming to the LGA1150 socket, the new Intel Broadwell LGA processors are a 14nm die-shrink of the 22nm Haswell CPUs. Sitting at the top of this batch is the new Intel Core i7-5775C flagship CPU which has HyperThreading and is unlocked just like the Intel Core i7-4770K Haswell and i7-4790K Devil’s Canyon processors before it. The two biggest changes other than a new process node, involve the inclusion of a massive 128MB eDRAM L4 cache and the powerful HD 6200 Iris Pro integrated graphics.

[sc:sponsor sponsor=”Intel” product_link=”http://www.intel.com” product_name=”Core i7-5775C” product_price_link=”http://www.amazon.com” product_price=”$366 (Tray)/$377 (Box)” ]


An engineering sample of the Intel Core i7-5775C was sent by Intel and other than the markings look identical to Haswell processors on the topside.Since it is an LGA1150 processor the pinouts are also similar but you can see the difference of the layout in the middle by looking at the transistor arrangement on the back of the PCB.


This is what the layout looks like inside the Intel Core i7-5775C Broadwell CPU. The powerful graphics processor takes up the most space while the new eDRAM L4 cache can be accessed by both the CPU core and the GPU. Dropping the “K” naming scheme for the unlocked parts, Intel adopts the designation “C” which most likely refers to “Crystal Well”.


Five 65W Broadwell desktop processors were launched, only two of which are Land-Grid Array aka LGA (socket) while three are Ball-Grid Array aka BGA (permanently mounted). All share the Iris Pro 6200 graphics with 48 Execution Units as well as the 128MB eDRAM and 65W TDP. Compared to the 84W TDP i7-4770K, the new Intel i7-5775C has a smaller L3 cache of 6MB vs 8MB and has 200MHz lower base and turbo frequency. These are just the five 65W parts, Intel has also released five more Broadwell processors in BGA package that has a lower 47W TDP.

i7-5775C i7-5775R i5-5675C i5-5675R i5-5575R
Base Frequency 3.3Ghz 3.3GHz 3.1GHz 3.1GHz 2.8GHz
Turbo Frequency 3.7GHz 3.8GHz 3.6GHz 3.6GHz 3.3GHz
Cores 4 4 4 4 4
Threads 8 8 4 4 4
Unlocked Yes No Yes No No
Graphics Iris Pro 6200 Iris Pro 6200 Iris Pro 6200 Iris Pro 6200 Iris Pro 6200
EUs 48 48 48 48 48
Graphics Frequency 1150MHz 1150MHz 1100MHz 1100MHz 1050MHz
Memory Speed Support 1600MHz 1600MHz 1600MHz 1600MHz 1600MHz
Integrated Memory Controller 2 ch 2 ch 2 ch 2 ch 2 ch
L3 Cache 6MB 6MB 4MB 4MB 4MB
L4 Cache (eDRAM) 128MB 128MB 128MB 128MB 128MB
TDP 65W 65W 65W 65W 65W
Price (tray) $366 $348 $276 $265 $244
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  1. Wow man what can I say. Excellent review, I am a bit disappointed that the 5775C does not have at least the same frequency of the 4790K, I believe for people that have machine that do not use a graphics card, this might be a better choice because of the Intel graphics. Plus the fact that the 5770C is LGA and not BGA is also a plus. My understanding is that with BGA you have to change out the whole motherboard also. So for people that are using a previous 1150 build to upgrade, this would make the chip not worth the trouble. I would love to see what GPU the new 6200 graphics stack up against. Again Ron, very informative and excellent review.

  2. Thank you very much Alan. Yeah, although looking at it from Intel’s perspective this is a win for them. This move will push more of the enthusiast crowd to the HEDT/Intel Extreme platform while increasing the userbase of the mainstream desktop platform for those that want a capable integrated IGP with a more powerful CPU and those who want a more powerful option than what AMD offers.

  3. people who are going to buy an i7 problably wont be using the integrated graphics and the point of AMDs apus where never to be high end they gave decent gaming performance at 720p this are entirely different consumers they guy that thinking of buying an APU is not going to buy an intel processor

  4. I am sorry for AMD they are 1 or 2 steps behind from Intel it seems
    Someone that wants performance will surely choose this processor over anything that AMD offers right now

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