• Yokemate of Keyboards
    Yokemate of Keyboards
    Andreas_Wolf
    Posts: 12058 from 2003/5/22
    From: Germany
    > I'd never realized how much of a role out of order execution
    > and branch prediction played in modern CPUs until you quoted
    > those figures.

    The Cell PPE while being an in-order design does have branch prediction. See minator's reply where he says that out-of-order execution capability is not a prerequisite for branch prediction.

    > I really had much higher expectations of the Cell BE's
    > performance before that.

    The Cell's special performance comes from the SPEs, if used properly that is. The benchmark figures I quoted take only the PPE into account, the SPEs are ignored.

    > It also points to one of the reasons most PPCs have an
    > inherent advantage over ARM CPUs.

    As it seems you missed what minator and I tried to tell you: there have been in-order ARM CPUs with branch prediction for at least a decade, and since early 2010 there're also out-of-order ARM CPUs. So what's this reason and advantage you're talking about?
  • »01.07.11 - 00:29
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