CPU Reviews

Intel Kaby Lake: Core i7-7700K, i7-7700, i5-7600K and i5-7600 in review

Intel is currently in the midst of the biggest restructuring in the company's history. In terms of its own growth forecasts, the focus is increasingly shifting toward IoT, cloud, and data centers. At the same time, the CPU... 200 chipsets and Optane Ready support Both the 200 and 100 chipsets support Kaby Lake and Skylake processors. This dual compatibility could create an interesting dilemma for enthusiasts who want to create a Skyl... Processors Core i7-7700K Core i7-7700 Core i7-7600K Core i7-7600 Motherboard and memory As the basis of our test platform, we use both the seventh (Kaby Lake) and the sixth (Skylake) generation of core CPUs MSIs Z... Benchmark selection and practical relevance Of course, you could make it easy and roll out synthetic benchmarks that show exactly one thing in the end: that there is actually nothing to show. In any case, not if the respective equivalent ... OpenGL: Cinebench R15 Before we let the very hard guys out, we insert a little synthetic foot insert in the form of the OpenGL benchmark in the Cinebench package. Takt goes ahead, you don't need more than four cores here. Own... Since we were always asked which graphics card or CPU is best when using Adobe CC & co. more intensively, we can now give an answer at least with regard to the CPU - at least as long as it is on our ... 3D-Peformance with dedicated graphics card Of course, the reader will also want to know how good (or bad) a new CPU is when playing challenging titles. For the next two tests, we use an Nvidia GeForce GTX 1080 FE, which is about as ... Important preliminary remark We have not known since today that the processors are subject to very large variations in quality during production. This time, however, our test samples are not directly from Intel, but are normal retail CPUs... This CPU does not have an open multiplier compared to the core i7-7700K and also has a significantly lower base clock. In addition, Intel's other values (e.g. Ringbus) deliberately chosen in such a way that even an overclocking over an increase... This CPU, like the Core i7-7700K, has an open multiplier and also has a significantly higher base clock than the non-K models. Of course, this also opens up enough space for your own manual overclocking attempts. If the ex works is... This CPU, like the Core i7-7000, does not have an open multiplier compared to the Core i5-7600K and also has a significantly lower base clock. Also with this CPU, an overclocking overane was increased BCLK by certain factory specifications... Golden Sample or Potato Chip? As already written, we have tested this time with pure retail CPUs - exactly with the material that the normal buyer can expect if he wants to upgrade as an "Early Adaptor" in a timely manner. However, it is... Intel's last generations of Intel's CPU have been characterized by a slow progression in incremental upgrades and have not exactly helped to keep their own products at a distance from those of the...

Processors

 

 

Core i7-7700K      Core i7-7700      Core i7-7600K      Core i7-7600

Motherboard and memory

 

As the basis of our test platform, we use both the seventh (Kaby Lake) and the sixth (Skylake) generation of the core CPUs MSIs Z270 Gaming M7. In contrast, an MSI Z97 Gaming 7 is used for the Haswell Refresh processors used for comparison purposes and an MSI 970 Gaming AM3+ is used for the AMD processors.

 

 

MSI's Z270 Gaming M7 offers a wealth of features, including a simplified auto overclocking feature for beginners and dual firmware with both an easy-to-use layout for beginners, as well as a wider and much more comprehensive layout for savvy users with numerous additional functions for overclockers. For the Gaming M7, MSI also uses ASMedia and implements Lightning USB 3.1 and an additional M.2 slot, so that there are a total of three accommodation options for the latest SSD format.

 

 

On the memory side, we rely on two modules with 8 GByte each from the G.Skills Ripjaws series (DDR4-3400) for the Z270 platform, while the Z97 system uses 8 GByte large bars from Crucial (DDR3L-1866).

 

 

Thanks to a powerful Enermax Liqtech 240 compact water cooling system, which is equipped with two Silent Wings 2 fan, even in the test runs with overclocked processors, compliance with an operating temperature that is considered safe can be guaranteed: In the present equipment, the compact water cooling used allows a thermal power dissipation of up to 300 watts is more than sufficient for all overclocking scenarios suitable for everyday use. However, we have also used the cooling solution in combination with Intel's Power Thermal Utility (PTU), which can push any processor to the absolute limit at the factory standard clock speeds.

 

Overclocking and stability

 

Overclocking should be about finding the right balance between a high clock frequency and a reasonable operating voltage, so that there is no negative impact on the life of the CPU. For this reason, we have also tried to operate the processors with settings that make sense for continuous operation. These should be easily recreated by our readers and do not require the heads of the CPU to get to a daring 7 GHz at a murderous 2.5 volts.

 

As a stability test, we rely on an FPU, CPU and cache load test of AIDA64 for several hours. Prime95 is then used for several hours to ensure that the selected overclocking settings prove stable in continuous operation.

 

Power consumption
Measurement: non-contact DC measurement
direct voltage measurement on the power supply
Infrared monitoring in real time
Measuring instruments: Rohde & Black HMO 3054
(500 MHz multi-channel oscillograph with memory function)
2x Rohde & Schwarz HZO50, current pliers adapter
2x Rohde & Schwarz HZO50, current pliers adapter
(1 mA to 30 A, 100 KHz, DC)
2x Rohde & Schwarz HZ355, probe divider (10:1, 500 MHz)
1x Rohde & Black HMC 8012
(digital multimeter with memory function)
1x Optris PI640, Infrared Camera + PI Connect
Watercooling: AiO: Enermax Liqtech 240
Fan: 2x 12 cm be quiet! Silent Wings 2

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About the author

Igor Wallossek

Editor-in-chief and name-giver of igor'sLAB as the content successor of Tom's Hardware Germany, whose license was returned in June 2019 in order to better meet the qualitative demands of web content and challenges of new media such as YouTube with its own channel.

Computer nerd since 1983, audio freak since 1979 and pretty much open to anything with a plug or battery for over 50 years.

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