Aaron Spink (aaronspink.delete@this.notearthlink.net) on February 4, 2015 12:59 pm wrote:
> Peter Greenhalgh (no.delete@this.thanks.com) on February 4, 2015 11:56 am wrote:
> > Overall we're extremely pleased to have increased IPC while meaningfully decreasing power
> > across various use cases. It's going to be great to see Cortex-A72 in partner platforms.
> > As we've got more than 10 partners extremely active with the processor I hope the wait
> > won't be too long! [in a big.LITTLE configuration with Cortex-A53 of course ;)]
> >
> Hi Peter,
>
> Can I just make a request/suggestion to include assumption/test information with future performance
> ratios/numbers (ideally on the slide but even on a backup slide would be an improvement). Pretty
> much everyone else in the industry does this (even for estimates) except for ARM. Always makes
> it a bit hard to take any of the performance numbers seriously. Should have no impact on the
> non-techincal people and would allow the technical people to take the marketing numbers just
> a little more seriously. But hey, at least marketing isn't still quoting DMIPS ;)

Umm yes, because they not say if the IPC increase claim is "mostly 10%" or "mostly 50%" :), neither they say if the sustained increase in performance at the same power is "up to" or "in average" or "in some lucky cases" or "in most cases" etc.....they are vague.
And yes some informations on test are welcomed.

Still i think the gain is mainly in the power management, not so strong in both A15 and A57. This time they have worked like Qualcomm have done with its very power efficent Krait core line??? Starting from a so so core and doing the right work results could be very interesting :).