• Yokemate of Keyboards
    Yokemate of Keyboards
    Posts: 12113 from 2003/5/22
    From: Germany
    > I still can't get data out of Applied Micro on the APM 83290 SoC [...]. Freescale has always
    > been pretty open with me (even providing me the MPC8641D samples [...]). I'm going to
    > check out the e5500. At 2.5 GHz, even without Altivec, it might be a match for the PA6T.

    Just for the purpose of overview I compiled a list of the DMIPS/MHz per core figures for various PPCs in ascending order (AltiVec capability is generally ignored, obviously):

    e300: 1.9...2.0 (depending on version)
    PPC440: 2.0
    PPC460: 2.0
    Titan: 2.0 (presumably PPC450 based)
    PA6T: 2.2
    PPC750: 2.3
    e600: 2.3
    PPC470: 2.3 or 2.5 (varying with information source)*
    e500mc: 2.5
    PPC970: 2.9
    e5500: 3.0

    * <edit>IBM says the PPC476FP has a figure of 2.7</edit>

    What seems really weird is the rather low value for the PA6T (which was provided by P.A.Semi themselves btw), especially compared to the PPC970, which I thought it should have been on par with. Or maybe the PPC970 figure is too high (i.e. with AltiVec)?

    > its available from a company that doesn't make it difficult to obtain technical
    > information or components.

    According to Freescale first samples of e5500 based silicon will be available in Q4/2010, initially scaling up to 2.0 GHz, later up to 2.2 GHz. And while the e5500 core is claimed to be able to reach up to 2.5 GHz, no such part has been announced yet.

    [ Edited by Andreas_Wolf on 2010/11/13 2:09 ]
  • »02.07.10 - 13:56