Each core is not much different to the older Cortex A8 cores so they should be comparable by clock rate, to get their aproximate speed. So these chips should be 8 times faster then what we have on the Pandora, both systems not overclocked.
The significant addition of the out of order engine, in addition to pipeline improvements, leads to the Cortex A9 being rated at 2.5 DMIPS/MHz
compared to the Cortex A8's 2.0DMIPS/Mhz
. This leads to straight up 25% improvement on a per clock basis from A8 to A9, and a more significant improvement with workloads in-order does poorly with. The Cortex A15
due to going to triple issue, from dual, and pipeline improvements is believed to represent at least a 50% improvement over the A9 on a clock per clock basis.
While this is rather impressive the rule of thumb when emulating is a ten fold processing advantage and the PS2 is a rather quirky piece of hardware. In my current unprofessional opinion OMAP 5 with settings appropriate for a handheld device, that is to say 1-1.5Ghz dual core according to ARMH, would probably insure that Nexius and whatever people do with IdTech4 in the near future, but not allow for emulating most 6th gen consoles like the PS2. Even if we're generous and go with A9 equivalence we're talking 1.5-2.25GHz equivalent verse 486MHz with the GameCube and 733MHz with the XBox for a maximum factor of 4.6 and 3.1 respectively. The PS2 is quirky enough to ask for at least a 3.2GHz Core 2 Duo equivalent
at this point, which a handheld configured OMAP 5 has nothing on.
The funny thing to me is people like to say the Pandora is obsolete because there are newer ARM processors on the market, but the developers have shown a strong ability to get 5th Generation and backwards console emulators operational. Yes more processor capability is more processor capability and customer buying decisions are often heavily influenced by a shallow reading of specifications, but power should have a purpose. So seems as how we're really not budging meaningfully from the current set of emulated systems in the foreseeable future, I am kind of curious what people would use that power for if the company managed to create a magic wand and materialize even the still unreleased OMAP 5 on 28nm process and magic up the rest of the stuff to make it all work.
Don't misunderstand me. I'm not advocating simple stagnation. I'm just genuinely curious what people are expecting.