• Yokemate of Keyboards
    Yokemate of Keyboards
    Posts: 11762 from 2003/5/22
    From: Germany
    >>> He seemed to think that some users would find the system
    >>> more appropriate for something like an R5 240.

    >> I read this comment he made regarding the use of GCN4/Polaris
    >> cards with A1222/Tabor: "Polaris cards cover the full range
    >> from low to high-end, just like their predecessors."

    > Of course they do, its not like the A1222 is the only system that
    > you could use a Polaris card in (and there are lower end cards),
    > and if someone wants to pay as much for their video card as the
    > do for their board, isn't that up to them?

    I meant it the other way round, namely that he seems to think that there are GCN4/Polaris cards low-end enough to be a good fit for the P1022 so that the P1022 isn't (much of) a bottleneck for the graphics card.

    > I just don't think a P1022 will drive a high end card as well as a
    > more powerful Soc.

    Yes, that's why there are low-end GCN4/Polaris cards.

    > I don't know how you'd separate the performance improvement of
    > the more capable, faster cpu, from the higher bandwidth interconnects
    > provide by the Soc.

    The typical test case to separate the influences of CPU and GPU on the overall performance result would be to test each CPU with each GPU, i.e. 4 combinations in case of 2 CPUs and 2 GPUs.

    > as resolutions scale up, even with better video cards, the less competent
    > processor is going to see diminishing returns. Better performance, but
    > gains throttled by cpu limitations. At this point 1080P resolutions are kind
    > of expected by the general public. How well do you think an A1222 will do
    > at this resolution?

    In case you refer to 3D gaming:
    The result depends on how well the 1.2 GHz e500v2 (one core for Amiga-like OS, two cores for multithreaded games on Linux) can cope with the required calculations for the game logic, which are independant from the resolution. This is assuming the resolution is below the resolution where the fill rate of the GPU is reached (otherwise the GPU becomes the bottleneck).

    In case you refer to video decoding:
    The result depends on the UVD support of the OS. An OS with UVD support like Linux will do fine even with a low-end GPU. An OS without UVD support (as well as for the 2nd CPU core) will do badly even with a high-end GPU as not supporting UVD means the CPU will have to do the H264 1080p decoding which a single 1.2 GHz e500v2 core cannot do in realtime.
  • »17.06.18 - 09:53