ARM Cortex-A15 might be 40% faster than Cortex-A9 at same Mhz and number of cores

Posted by – March 16, 2011
Category: Opinions

ARM Cortex-A15 which might already be available in products next year, is reported by, could be 40% more performance per Mhz per core.

The Cortex-A8 reached 2.0 DMIPS/MHz while the Cortex-A9 reached 2.5 DMIPS/MHz, a 25 per cent improvement. According to our contact at ARM, the A15 has a “published but not formal number” of 3.5 DMIPS/MHz but told us that the performance difference across generation is “dependent on many factors” before adding that “Other benchmarks can show less improvement on specific devices, others a greater improvement”.

What’s more we already know of at least one manufacturer who has published benchmark figures for the Cortex-A15; Last month at the Mobile World Congress in Barcelona, ST-Ericsson revealed that its new system on Chip, the Nova A9600, would have two Cortex-A15 core, runs at 2.5GHz and, more importantly, breaks the 20,000 DMIPS barrier.

This means that the ST-Ericsson’s tweaked implementation of the Cortex-A15 can reach at least 4.01 DMIPS/MHz, which is itself a 14 per cent improvement upon what ARM’s figures.

We’ve also been tipped off by an anonymous source outside ARM that the company will be announcing a major breakthrough by the end of the 2011; just one year after the unveiling of the Cortex-A15.