TrueCrypt disk encryption
TrueCrypt supports acceleration via Intel's AES-NI instructions, so the encoding of the AES algorithm, in particular, should be very fast on the CPUs that support those instructions. We've also included results for another algorithm, Twofish, that isn't accelerated via dedicated instructions.
Along with the Core i5, the A4-5000 is the only processor in the mix to support AES acceleration. That acceleration pays substantial dividends in TrueCrypt.
The Twofish algorithm isn't accelerated, but the A4-5000 still gives the Core i3 a minor whupping there. It's also more than twice as fast as the E-350—and the Atom.
7-Zip file compression and decompression
The Core i3 has a clear advantage when it comes to data compression in 7-Zip, but two chips handle decompression at about the same rate.
The Core i5 does perform better than the Core i3 here despite its slightly lower base clock speed, but remember, it also has Turbo Boost and considerably more memory bandwidth at its disposal.
The Panorama Factory photo stitching
The Panorama Factory handles an increasingly popular image processing task: joining together multiple images to create a wide-aspect panorama. This task can require lots of memory and can be computationally intensive, so The Panorama Factory comes in a 64-bit version that's widely multithreaded. We asked it to join four pictures, each eight megapixels, into a glorious panorama of the interior of Damage Labs.
In the past, we've added up the time taken by all of the different elements of the panorama creation wizard and reported that number, along with detailed results for each operation. However, doing so is incredibly data-input-intensive, and the process tends to be dominated by a single, long operation: the stitch. Thus, we've simply decided to report the stitch time, which saves us a lot of work and still gets at the heart of the matter.
The A4 is again slower than the Core i3, but it's much faster than the E-350.
Well, that is, unless you're running the 32-bit version of the app, which seems to be much slower than the 64-bit version. The Atom Z2760's lack of 64-bit support puts it at a substantial disadvantage.
x264 HD video encoding
We've devised a new x264 test, which involves one of the latest builds of the encoder with AVX2 support. To test, we encoded a one-minute, 1080p .m2ts video using the following options:
--profile high --preset medium --crf 18 --video-filter resize:1280,720 --force-cfr
The source video was obtained from a repository of stock videos on this website. We used the Samsung Earth from Above clip.
The A4 is almost three times quicker than the E-350 and the Atom Z7260. However, it's a tad slower than the Core i3. These results largely echo those from AIDA64's AVX-enabled synthetic benchmarks.
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