Apple Cyclone / A7 Discussion

Discussion in 'PC Industry' started by Raqia, Oct 30, 2013.

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  1. Raqia

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    There's some nice analysis of Apple's Cyclone CPU in anandtech's iPad Air review:

    http://anandtech.com/show/7460/apple-ipad-air-review/2

    Pretty damned wide CPU. Memory interface width is 64 bit now but bandwidth is actually better.
     
  2. Pressure

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  3. hkultala

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    I did not find any discussion about it there, only some random post about the 4 MiB cache.

    That thread is way too cluttered with other things and finding relevant posts too difficult so lets discuss the cpu architecture here.
     
  4. Raqia

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    Other tidbits include:

    -Resizable ROB with iPad air able to have 20% more instructions in flight.
    -Low clock speed @1.4 ghz or so compared to Krait 330 @ 2.3 ghz but very high IPC apparent from benchmarks.

    Looks like a "module" is structured around a pair of cores tied to 1 mb of cache. This might only be for this gen of iPhone though, Apple has the luxury of being able to afford doing a dramatically different microarchitecture each year since they're selling tens of millions of these things.
     
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