Testing Setup and SiSoft Sandra
For this review, we have a more complex benchmark situation that normal. In many cases we have only limited time with some mobile platforms (these guys want those laptops back I guess), for some tests you'll notice that certain processors just won't have results. That is not because they wouldn't run, but due to the fact that our results are outdated for that platform or that our testing them didn't include that benchmark.
|Test System Setup|
|CPU||Intel Core M 5Y70 (Broadwell, 4.5w)
Intel Core i5-4200U (Haswell, 15w)
Intel Core i5-4250U (Haswell, 15w)
Intel Atom Z3700 (Bay Trail, 2w)
AMD FX-7600P (Kaveri, 35w)
Obviously the new Lenovo Yoga 3 Pro is the source of our Core M 5Y70 benchmarks. Our Core i5-4200U system is the Lenovo Yoga 2 Pro. The Core i5-4250 results come from the Haswell iteration of the Intel NUC platform. The Intel Atom Z3770 results are from a reference platform we tested at initial launch. Finally, the AMD FX-7600P results come from a reference notebook AMD let us spend a day with in San Francisco.
SiSoft Sandra 2013 SP3a
The latest version of SiSoft Sandra offers up a lot of new features including GPU performance, OpenCL, etc.
Our first look at the Core M 5Y70 shows synthetic performance under that of the Core i5 Haswell processors; as much as 28% slower in fact. Compare to the Atom Z3770 though, the Core M 5Y70 is 22% faster integer testing and 12% faster in floating point. That definitely isn't a huge difference though, but I'm curious how much these performance differences translate into real-world applications.
SiSoft Multimedia results show a much better result for the Core M 5Y70; it is 19% slower than the Core i5-4200U but maintains a 2.27x advantage over the Atom processor based on Bay Trail. Memory bandwidth is a bit slower than the 4200U but keeps a sizeable advantage over both the Z3770 and the AMD FX-7600P.