Articles: CPU

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Performance in Applications

To test the processors performance during data archiving we resort to WinRAR archiving utility. Using maximum compression rate we archive a folder with multiple files with 1.4 GB total size.

We measured the performance in Adobe Photoshop using our own benchmark made from Retouch Artists Photoshop Speed Test that has been creatively modified. It includes typical editing of four 10-megapixel images from a digital photo camera.

We use Apple iTunes utility to test audio transcoding speed. It transcodes the contents of a CD disk into AAC format. Note that the typical peculiarity of this utility is its ability to utilize only a pair of processor cores.

In order to measure how fast our testing participants can transcode a video into H.264 format we used x264 HD benchmark. It works with an original MPEG-2 video recorded in 720p resolution with 4 Mbps bitrate. I have to say that the results of this test are of great practical value, because the x264 codec is also part of numerous popular transcoding utilities, such as HandBrake, MeGUI, VirtualDub, etc.

We use special Cinebench test to measure the final rendering speed in Maxon Cinema 4D.

The diagrams above allow us to once again repeat everything we have already said about SYSmark 2011 results. Overall, Core i5-2500T and Core i5-2390T seem to be quite fast, but at the same time quite energy-efficient processors. In most cases they fall between the quad-core 95 W Core i5 processors and dual-core 65 W Core i3. Therefore, these processors are going to be of particular interest if you are looking to build a powerful but energy-efficient system.

As for the performance of Core i3-2100T and Pentium G620T, they should first of all be regarded as very appealing products in terms of price. I have to admit that their performance was not too impressive, but no one promised anything mind-blowing here.

In addition to the benchmarks above, we will also check out the performance of Intel Quick Sync. For this purpose we measured the time it took to transcode a 40-minute H.264 1080p video (a popular TV show episode) into an iPhone 4-friendly format in lower resolution. We used a popular commercial utility from Cyberlink called MediaEspresso 6.5, which supports Quick Sync technology.

This is where all results can be split in two large groups. The first group includes Core i5 and Core i3 processors that support Quick Sync technology, while the second group includes Pentium CPUs that don’t have this technology. The transcoding time in the first group is about 4 times shorter than the transcoding time for CPUs in the second group. The second factor that may affect MediaEspresso performance is the GPU frequency. This is exactly why the energy-efficient Core i5-2500T suddenly takes the lead. Its graphics core can dynamically overclock to 1.25 GHz, while in all other processors the graphics core could only speed up to 1.1 GHz.

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