The Intel Kaby Lake-X i7 7740X and i5 7640X Review: The New Single-Threaded Champion, OC to 5GHzby Ian Cutress on July 24, 2017 8:30 AM EST
Benchmarking Performance: CPU Web Tests
One of the issues when running web-based tests is the nature of modern browsers to automatically install updates. This means any sustained period of benchmarking will invariably fall foul of the 'it's updated beyond the state of comparison' rule, especially when browsers will update if you give them half a second to think about it. Despite this, we were able to find a series of commands to create an un-updatable version of Chrome 56 for our 2017 test suite. While this means we might not be on the bleeding edge of the latest browser, it makes the scores between CPUs comparable.
All of our benchmark results can also be found in our benchmark engine, Bench.
SunSpider 1.0.2: link
SunSpider has a single threaded focus, and we see the Kaby Lake-X processors take their spots at the top of the graph.
Mozilla Kraken 1.1: link
Mozilla too relies on single threaded IPC and frequency.
Google Octane 2.0: link
Along with Mozilla, as Google is a major browser developer, having peak JS performance is typically a critical asset when comparing against the other OS developers. In the same way that SunSpider is a very early JS benchmark, and Kraken is a bit newer, Octane aims to be more relevant to real workloads, especially in power constrained devices such as smartphones and tablets.
Octane is an interesting benchmark, requiring cores and ST performance, but mostly the latter. It also seems that either Intel's design is optimized for the benchmark or vice versa, given the substantial difference in performance. There's no way for the benchmark to use all of the threads from AMD, nor the 12 threads in the Core i7-7800X which has a lower single thread performance.
WebXPRT 2015: link
While the previous three benchmarks do calculations in the background and represent a score, WebXPRT is designed to be a better interpretation of visual workloads that a professional user might have, such as browser based applications, graphing, image editing, sort/analysis, scientific analysis and financial tools.
WebXPRT is a mix of ST and MT, but still based in the web and relies on ST performance a lot. Given the variable loading on the benchmark, Intel's newest features such as Speed Shift help keep it at the top.