Core i7-8700K vs Core i9-9900K - 2D Performance

Published by Luca Rocchi on 05.03.19

There is a variety of customer groups in need of as much processing power as possible. Especially in the field of content creation, which includes editing pictures and videos or even rendering a complex scenery with beautiful effects, performance improvements quickly translate into higher income by the end of the month. With this series of articles we're going to compare two processors. The CPUs tested are being run at stock clocks as well as 4.2GHz and apart from that we will also vary the memory frequency. It is our goal to show which CPU is how much faster or slower than another one.




Hardware

Motherboard
  • MSI Z370 Gaming Pro Carbon AC
  • MSI Z390 Gaming Pro Carbon AC
Processor
  • Core i9-9900K @ Default
  • Core i9-9900K @ 4.2 GHz
  • Core i9-9900K @ 4.2 GHz DDR4-3000


  • Core i7-8700K @ Default
  • Core i7-8700K @ 4.2 GHz
  • Core i7-8700K @ 4.2 GHz DDR4-3000
Cooler Corsair Hydro H150i Pro RGB
Memory Corsair Vengeance LPX 4x4 16GB DDR4-2133 C15
Graphic card ASUS GeForce GTX 980
Hard disk
  • Intel 335 Series SSD 120 GB
  • Corsair Neutron NX500 NVMe PCIe SSD 400 GB
Power supply Seasonic X-1250
OS Windows 10 x64 Updated

Performance



Conclusion

Default

First of all we’re going to have a closer look at performance differences with standard clock speeds. From our overall performance rating we see that the Core i9-9900K is on average 27.66% quicker than the Core i7-8700K. If we start searching for the benchmarks with best possible scaling on the i9-9900K, then we find that Photoshop runs 61% faster on this CPU and WinRAR benefits by 52%. We also had a closer look at power consumption and it's rather similar on both setups.

4.2 GHz

When we set 4.2GHz on both processors we see that the Core i9-9900K is still 21.88% faster on average. Once again the power consumption in full load is on par on both models. There is a slightly difference in idle where the Core i7-8700K requires 10 Watts more.

4.2 GHz DDR4-3000

Having arrived at this point we’re not going to go through every single benchmark anymore since the overall results are still very similar. What’s much more interesting now is checking what performance differences there are when running DDR4 memory at 3000MHz with both processors, while the stock clocks are DDR4-2133. Overclocking the system with the Core i9-9900K inside we notice that the performance goes up by 3.41%. In the case of the Core i7-8700K the difference is 4.68% on average.

Recommendation

A quick look at the performance differences between these two CPUs shows, that only select applications benefit from the additional cores/threads the Intel Core i9-9900K offers compared to the i7-8700K. Nevertheless it's interesting to see that Intel's new flagship performed 61% faster in Photoshop, when we compared the two CPUs at default clock speeds. The difference in rendering applications is still impressive. Therefore investing in such a costly CPU can make sense if you're using it in a professional environment. If you're saving precious time, which in translates into increased revenue, then deciding for an i9-9900K over an i7-8700K is going to pay off rather sooner than later.

At the moment the Intel Core i9-9900K is available on Geizhals for 530 Euro, which is 120 Euro more than the Core i7-8700K. In our opinion the price difference is more than justified.


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