Articles: CPU

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Application Tests

In Autodesk 3ds max 2015 we benchmark the speed of mental ray rendering of a 1920x1080 still from the Space_Flyby scene of the SPEC benchmarking suite.

We benchmark performance in Adobe Photoshop CC 2014 using our custom test that is based on the Retouch Artists Photoshop Speed Test and consists of typical processing of four 24-megapixel images captured with a digital camera.

The test scenario for Adobe Photoshop Lightroom 5.6 is about post-processing of two hundred 12-megapixel RAW images captured with a Nikon D300 and exporting them into JPEG files (1920x1080 with maximum quality).

The performance in Adobe Premiere Pro CC 2014 is measured as the time it takes to render a Blu-ray H.264 project with HDV 1080p25 video and apply special effects to it.

To check out web application performance, we use Internet Explorer 11 and the WebXPRT 2013 benchmark which executes fragments of real-life HTML5 and JavaScript code.

To test the processors’ performance at data archiving we launch WinRAR 5.0. Using maximum compression rate, we archive a 1.7GB folder with multiple files.

In order to measure how fast the tested CPUs can transcode video into H.264 format we used x264 FHD Benchmark 1.0.1 (64 bit). It measures the time it takes the x264 coder to convert an MPEG-4/AVC video recorded in 1920x1080@50fps resolution with default settings. The results have high practical value because the x264 codec is part of popular transcoding utilities such as HandBrake, MeGUI, VirtualDub, etc. We regularly update the coder used in this performance test. This time around, we use version r2453, which supports all contemporary instruction sets including AVX2.

We’ve also added the new x265 coder to our list of tests. It is designed to transcode video into the H.265/HEVC format which improves on H.264 and features more efficient compression algorithms. We convert an original 1080p@50fps Y4M video file into the H.265 format using the medium profile. The coder is version 1.2.

We have no surprises in the resource-consuming applications, either. The increased clock rates of the Devil’s Canyon series help them win in all the tests. Their advantage over the senior Haswell models released a year ago is clear. It amounts to 2% with the Core i5-4690K but the Core i7-4790K, working in default mode, beats the Core i7-4770K by as much as 12%. Thus, the Core i7-4790K looks optimal for those who need high out-of-box performance. It is superior to its predecessor and as much as 25% faster than its Core i5 cousin.

By the way, in its marketing materials Intel claims the Core i7-4790K is more than 30% faster on average than the senior Sandy Bridge model, Core i7-2700K, and up to 65% faster in certain applications such as video content authoring and processing.

Overclocking doesn’t provide such high performance scalability. Overheating prevents you from running a Devil’s Canyon processor at very high clock rates. So you can only improve performance by 5% to 15% depending on the model, Core i7-4790K or Core i5-4690K.

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