Kaveri - test cores Steamroller. Performance of a separate graphics card - PCLab.pl

Steamroller vs Piledriver

Piledriver cores are used in virtually all currently marketed AMD units using a modular architecture. Starting from a series of APU A4, the A6, A8, A10, and ending processor FX-4000, FX-6000, FX-8000 and FX-9000. While Piledriver ahead of the Zambezi (1st generation architecture Bulldozer)? About this could be convinced of the article on the FX-8350. As against this background that falls Steamroller and why is it so important?

Steamroller introduces a number of changes among which the most important is doubling the instruction decoder. So far one module (2 ALUs and one FPU) fell one such decoder, which was considered by many to be the biggest brake modular architecture. Of course, not all fixes, but more on this read in our previous material.

Steamroller APU only

New Kaveri APU was awaited not only because of the HSA, and the new layout GCN. Many of us have been waiting for Kaveri also because, in order to meet performance cores Steamroller. Unfortunately, the vast majority of rumors and more or less confirmed information indicates that AMD does not intend to build a processor (without the graphics chip, which is not APUs) FX using new x86 cores. “Road maps” AMD is in this matter quite clear. Vishera still has a long career ahead of him. However, we hope that not only will the Athlon X4 (X4 750K trace model, or APU graphics chip is switched off), but also AMD quietly preparing a 4-module FX-y, even if it would be equipped with graphics core . That is why we have prepared a hypothetical test Athlon X4 processor cores using the new Steamroller.

Unfortunately, supplied by AMD A8-7600 system had an unlocked multiplier, which significantly reduced not only the overclocking performance, but also a broader analysis of the performance of cores Steamroller. But a happy coincidence that the appropriate measurements were possible. Hypothetical Athlon X4 created by disabling the GPU in the A8-7600 is characterized by the following parameters: base frequency is 3.3 GHz, and the maximum clock speed in turbo mode is 3.8 GHz. In practice, the frequency of all the cores at the load does not fall below 3.5 GHz, they rarely reaches 3.8 GHz (with a load of only one core). And that’s very valuable information. For comparison:

• Athlon X4 750K: bazowo 3.4 GHz, but with a load of all cores not less than 3.6 and not more than 4 GHz (with a load of only one core).
• Athlon X4 740: bazowo 3.2 GHz, but with a load of all cores no less than 3.4 GHz, and no more than 3.7 GHz (single core at load).

In other words, if Steamroller in the application does not bring productivity growth relative to the piledriver, our A8-7600 will put between X4 740 and X4 750K. Any score above X4 750K is pure profit from the improved modular architecture.

addition: if the A8-7600 is never clocked lower than 3.5 GHz, it also added graphs Phenom II X4 970, the clock is 3.5 GHz … :)

In our opinion, the 99% exhaust the topic of comparisons “clock time”. Of course, if only in our hands fall into the top model A10-7850K, pokusimy by comparison with an appropriately matched frequencies.

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