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):

Disk Test49.61 Sequential91.29 Uncached Write118.8272.96 MB/sec [4K blocks] Uncached Write97.9755.43 MB/sec [256K blocks] Uncached Read 54.9516.08 MB/sec [4K blocks] Uncached Read 143.0271.88 MB/sec [256K blocks] Random34.06 Uncached Write10.971.16 MB/sec [4K blocks] Uncached Write144.3046.20 MB/sec [256K blocks] Uncached Read 81.990.58 MB/sec [4K blocks] Uncached Read 138.7825.75 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）：

Disk Test 155.83 Sequential116.92 Uncached Write97.9660.14 MB/sec [4K blocks] Uncached Write130.2773.71 MB/sec [256K blocks] Uncached Read 81.3923.82 MB/sec [4K blocks] Uncached Read 247.56124.42 MB/sec [256K blocks] Random233.54 Uncached Write317.7433.64 MB/sec [4K blocks] Uncached Write96.2930.83 MB/sec [256K blocks] Uncached Read 515.423.65 MB/sec [4K blocks] Uncached Read 604.25112.12 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：

Disk Test169.21 Sequential124.90 Uncached Write128.8279.09 MB/sec [4K blocks] Uncached Write104.5959.18 MB/sec [256K blocks] Uncached Read 93.6527.41 MB/sec [4K blocks] Uncached Read 248.65124.97 MB/sec [256K blocks] Random262.24 Uncached Write334.8635.45 MB/sec [4K blocks] Uncached Write98.6231.57 MB/sec [256K blocks] Uncached Read 1879.4413.32 MB/sec [4K blocks] Uncached Read 627.11116.37 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)：

Disk Test306.37 Sequential211.75 Uncached Write296.35181.96 MB/sec [4K blocks] Uncached Write319.05180.52 MB/sec [256K blocks] Uncached Read 103.2830.22 MB/sec [4K blocks] Uncached Read 370.59186.25 MB/sec [256K blocks] Random553.87 Uncached Write320.1133.89 MB/sec [4K blocks] Uncached Write482.30154.40 MB/sec [256K blocks] Uncached Read 1922.1113.62 MB/sec [4K blocks] Uncached Read 664.74123.35 MB/sec [256K blocks]

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