Dell XPS 13 (2015) Ultrabook Review, It's Hot Hardware
by
Dave Altavilla
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Monday, September 21, 2015, 11:20 AM EDT
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For this test, we created our own 223MB WAV file (a mile-long Grateful Dead jam) and converted it to the MP3 format using the multi-thread capable LAME MT application, in both single and multi-thread modes. Processing times are recorded below, listed in seconds. Shorter times equate to better performance.

Here the Dell XPS 13 and its Core i5-5200U are able to beat-out the Surface Pro 3 and it's Core i5-4300U in the multi-threaded test but come up just a hair short in single threaded due to the 4300U's clock speed advantage (2.7GHz vs 2.9GHz). Technically, since Intel bumped the clock speed of the Core i5-5200U (2.7GHz) versus its direct previous generation replacement, the Core i5-4200U (2.6GHz), it's more difficult to draw a clock-for-clock comparison. However, in multithreaded workloads, the new Broadwell-U series delivers beyond its slight clock speed bump.
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Cinebench allows the Core i5-5200U to stretch its legs a bit more and we see a 15 percent advantage for the 2015 Dell XPS 13 versus Lenovo's 2014 ThinkPad X1 Carbon with its Core i5-4200U, in terms of CPU throughput. In addition, Intel's HD 5500 graphics engine in the new Broadwell-U architecture shows in excess of a 17 percent advantage versus the previous gen Haswell HD 4400 architecture, with respect to the OpenGL graphics rendering test.
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