Intel Core i7-7700K And Z270 Chipset Review: Kaby Lake Hits The Desktop

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JetStream And LAME MT Tests

Next up, we have some numbers from the JetStream Benchmark Suite developed by WebKit. The JetStream Benchmark Suite uses a wide array of latency and throughput benchmarks to evaluate JavaScript performance, and all of the results are tabulated with roughly equal weighting. The benchmark measures both metrics of traditional JavaScript programming styles used on websites as well as new JavaScript-based technologies used on more modern, rich web applications. Scores in this benchmark are an indicator of the performance users would see when browsing and running advanced web applications.
JetStream JavaScript Benchmark
JavsScript Performance Testing
All of the systems were testing using the latest version of Microsoft's Edge browser, with default browser settings, on a clean install of Windows 10 Professional x64.

jetstream

The higher-clocked, Kaby Lake-based Core i7-7700K took the overall lead here, but the Core i7-6700K was only slighly behind it. Once again, the 7700K's higher clocks give it the edge.

LAME MT
Audio Conversion and Encoding
In our custom LAME MT MP3 encoding test, we convert a large WAV file to the MP3 format, which is a popular, day-to-day use case for many end users, to provide portability and storage of their digital audio content. LAME is an open-source mid to high bit-rate and VBR (variable bit rate) MP3 audio encoder that is used widely around the world in a multitude of third party applications.

In this test, we created our own 223MB WAV file and converted it to the MP3 format using the multi-thread capable LAME MT application in single and multi-thread modes. Processing times are recorded below, listed in seconds. Shorter times equate to better performance.

lame

This audio-encoding benchmark utilizes only one or two threads, so most of the cores (both physical and virtual) are left idle. Skylake also performed erratically in the past on this test (especially on mobile platforms), but Kaby Lake kills it. The Core i7-7700K put up the best numbers we have seen to date in this benchmark.

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