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SSD 在苹果笔记本上的速度测试

新一代 MacBook Air 已经全数放弃传统机械硬盘,转用固态硬盘(SSD)。玩家都知道,从机械硬盘换用固态硬盘对系统运转速度的提升是立竿见影的。我们最近用 Xbench 测试了苹果原装的三星 SSD、Intel X25-M(二代,目前最快的 SSD 之一)、以及一款 7200 转传统硬盘在苹果笔记本上的速度,现将结果分享如下。

一代 Unibody 13” MacBook (Core 2 Duo 2.4GHz / 4 GB DDR3@1066 MHz / 希捷 7200 转 500 GB 机械硬盘 / SATA II):

<strong>Disk Test   49.61</strong>  
    <strong>Sequential</strong> 91.29   
        Uncached Write  118.82  72.96 MB/sec [4K blocks]
        Uncached Write  97.97   55.43 MB/sec [256K blocks]
        Uncached Read         54.95 16.08 MB/sec [4K blocks]
        Uncached Read         143.02    71.88 MB/sec [256K blocks]
    <strong>Random</strong> 34.06   
        Uncached Write  10.97   1.16 MB/sec [4K blocks]
        Uncached Write  144.30  46.20 MB/sec [256K blocks]
        Uncached Read         81.99 0.58 MB/sec [4K blocks]
        Uncached Read      138.78   25.75 MB/sec [256K blocks]

黑色 MacBook (Core 2 Duo 2.2GHz / 4 GB DDR2@667 MHz / Intel X25-M 80 GB SSD / SATA I),重启后不开任何程序,SSD 剩余空间 5 GB):

<strong>Disk Test      155.83</strong>  
    <strong>Sequential</strong> 116.92  
        Uncached Write  97.96   60.14 MB/sec [4K blocks]
        Uncached Write  130.27  73.71 MB/sec [256K blocks]
        Uncached Read       81.39   23.82 MB/sec [4K blocks]
        Uncached Read         247.56    124.42 MB/sec [256K blocks]
    <strong>Random</strong> 233.54  
        Uncached Write  317.74  33.64 MB/sec [4K blocks]
        Uncached Write  96.29   30.83 MB/sec [256K blocks]
        Uncached Read         515.42    3.65 MB/sec [4K blocks]
        Uncached Read         604.25    112.12 MB/sec [256K blocks]

黑色 MacBook (Core 2 Duo 2.2GHz / 4 GB DDR2@667 MHz / Intel X25-M 80 GB SSD / SATA I),开着十个左右的程序,SSD 剩余空间 25 GB:

<strong>Disk Test   169.21</strong> 
    <strong>Sequential</strong> 124.90  
        Uncached Write  128.82  79.09 MB/sec [4K blocks]
        Uncached Write  104.59  59.18 MB/sec [256K blocks]
        Uncached Read         93.65 27.41 MB/sec [4K blocks]
        Uncached Read         248.65    124.97 MB/sec [256K blocks]
    <strong>Random</strong> 262.24  
        Uncached Write  334.86  35.45 MB/sec [4K blocks]
        Uncached Write  98.62   31.57 MB/sec [256K blocks]
        Uncached Read         1879.44   13.32 MB/sec [4K blocks]
        Uncached Read       627.11  116.37 MB/sec [256K blocks]

高配的 15” MacBook Pro (i7 2.66GHz / 8 GB DDR3@1066 MHz / 苹果原配三星 SSD 250 GB / SATA II):

<strong>Disk Test   306.37</strong> 
    <strong>Sequential</strong> 211.75  
        Uncached Write  296.35  181.96 MB/sec [4K blocks]
        Uncached Write  319.05  180.52 MB/sec [256K blocks]
        Uncached Read         103.28    30.22 MB/sec [4K blocks]
        Uncached Read         370.59    186.25 MB/sec [256K blocks]
    <strong>Random</strong> 553.87  
        Uncached Write  320.11  33.89 MB/sec [4K blocks]
        Uncached Write  482.30  154.40 MB/sec [256K blocks]
        Uncached Read         1922.11   13.62 MB/sec [4K blocks]
        Uncached Read         664.74    123.35 MB/sec [256K blocks]