• Order of the Butterfly
    Order of the Butterfly
    Spectre660
    Posts: 240 from 2015/6/30
    Just spotted an interesting difference under AmigaOS 4.1 between the Sam460ex and X5000/020 Memcopy performance with HD6550 and HD6570. DMA vs no DMA .


    Sam460ex - HD6450

    MemCopy Score: 603.20
    Operation MiB/s
    Copy to VRAM 301.07
    Write Pixel Array 626.69
    Copy from VRAM 57.86
    Read Pixel Array 57.92


    X5000/020 - HD6450

    MemCopy Score: 308.74
    Operation MiB/s
    Copy to VRAM 270.00
    Write Pixel Array 269.71
    Copy from VRAM 40.21
    Read Pixel Array 38.54

    ========================================================================================

    With an R7-250x


    Sam460ex - R7-250x

    MemCopy Score: 602.57
    Operation MiB/s
    Copy to VRAM 305.42
    Write Pixel Array 629.77
    Copy from VRAM 53.19
    Read Pixel Array 54.13

    X5000/020 - R7-250x

    MemCopy Score: 584.04
    Operation MiB/s
    Copy to VRAM 532.90
    Write Pixel Array 530.81
    Copy from VRAM 54.10
    Read Pixel Array 52.25
  • »06.04.18 - 12:37
    Profile