Device comparison with benchmarks Principled （设备与基准原则）.pdf

DEVICE COMPARISON WITH BENCHMARKS Benchmarks give a representative view of device performance. When purchasing a device, consumers can use benchmark results that measure battery life, graphics performance, and processor power to better understand these important and varied capabilities. In our hands-on testing at Principled Technologies, we measured the performance of 20 devices: 16 devices were powered by an Intel® processor, 2 had a Samsung® Exynos® 5 Octa processor, and 2 had an Apple® processor. The devices were from multiple brands, and varied in display size and operating system: 4 running Android™, 2 running Apple iOS, and 14 running Microsoft® Windows® 8.1. We used an assortment of benchmarks to compare the devices. DEVICES WE TESTED For presenting our test results, we separated the devices into publicly available price-based categories. These prices are in US dollars. For detailed information about the devices we tested, see Appendix A. Figure 1 shows the devices we tested that range in price from $229 to $469. Processor Operating system (OS) Apple iPad mini™ 3 Apple A7 iOS 8 ASUS® Transformer Book T200TA Intel Atom™ Z3795 Windows 8.1 Lenovo® Yoga™ Tablet 2 (8″) Intel Atom Z3745 Android 4.4