SunSpider is a JavaScript benchmark, probably one of the oldest ones around. We ran version 1.0.2, the most current one available.

For this benchmark, a lower number is better. From previous tests I’ve performed, I’ve seen much lower Sunspider numbers. I suspect these results are due to a combination of older hardware, Windows 10 still being unfinished, and of course the fact these are beta browsers.

Chrome Canary started off OK:


Firefox Nightly was noticeably slower:


Microsoft Edge beat them both:


This is the only test Edge won, and it did so in style.