AMD Llano A-Series: Architecture Analysis - Data compression and Multimedia Test

Indice articoli

Data compression & Multimedia Test

7zip 9.20

Let's move to the benchmarks related to compression, decompression and multimedia files from a known program to manage archives: 7zip.

Let's launch the tool of performance measurement and verify the values, expressed in MIPS, the software reports.

7zip

Llano
performs half way between the two Phenoms and is surpassed in the compression by Phenom II 945 despite its slower RAM speed
. In this case, the L3 cache helps. So much so that the Phenom II 840 is in trouble. As for the decompression, the memory bandwidth here counts more, and then the Llano and the Propus have the upper hand.

WINRAR 4 Beta 3

The Winrar benchmark consists of the compression of a software predefined file, reporting a value in KB/s.

winrar

The same relative 7zip behavior of the various CPU apply here in Winrar.

CINEBENCH 11.5

Let's launch Cinebench 11.5, able to test the performance of a CPU by handling and processing of images.

This software, as well as version 10, is highly parallelized and takes full advantage of all processors in the system.

cine11

This time the various improvements and the improvements to the L2 cache, surpass the performance loss due to the lack of L3 cache. Llano, then is placed in the first place. Finally, despite the slower RAM, the Phenom 945 II outperforms the Phenom II 840.

CINEBENCH 10

Also this benchmark uses full multicore technologies.

Let's analyze the recorded data.

cine10

Here too the same behaviour of Cinebench 11.5, although with much smaller differences.

X264 HD BENCHMARK

This benchmark enables the assessment of performance by converting a chosen file in the x264 format.

This operation is carried out in four phases by two steps each.

x264hd

Here too the same behaviour of Cinebench 11.5, but this time the differences are 3% between the first and second place.

HandBrake

Let's launch Handbrake with the task of transforming a 698MB MP4 movie verifying which processor needs less time to complete the operation; in this case a lower value on the graph indicates a superior performance.

handbrake

Also in this video compression test we notice a similar trend to HD x264 test. Further indication of the effectiveness of the improvements to the Llano core.

Considerations on CPU tests

In synthetic and compression tests, Llano shows gains against the Propus core, thanks to the various improvements to the core, but loses slightly against the Phenom II 945, due to the lack of L3 cache, as these tests are more dependent on memory, where L3 cache and a lower latency due to the absence of a GPU can make a difference. But Llano excels in multimedia applications, where it is important both to have greater computing power, both to be more effective in prefetching and streaming data to memory, where the enhanced RAM controller does his best. In synthetic tests, however, the data is typically accessed in a more random pattern and quite often reused. So larger cache can result in some advantage.

Corsair