Two tests were run, one under XP running on a Mac Mini and the other with Vista running on a MacBook Pro. In these tests the TraceMonkey engine beat V8 by 1.28x and 1.19x respectively.
I decided to replicate the test on my own test platform (running Windows Vista Ultimate 32-bit) because the last time I tried benchmarking the TraceMonkey engine with SunSpider, the test crashed. This time I didn't have such issues.
Note: Here are the browser versions: - Mozilla Firefox (JIT compiler enabled) - Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b1pre) Gecko/20080905031348 Minefield/3.1b1pre - Google Chrome - Official Build 1583Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/525.13 (KHTML, like Gecko) Chrome/0.2.149.27 Safari/525.13
I also ran both browsers through Google's V8 benchmark test.
Here Google's V8 engine beat TraceMonkey by a whopping margin - 12.8x.