測速 三次數據差異過大 - 儲存設備

大家好 我想問問大家 如果測速測隨身碟結果發現到測的速度

差異過大是怎樣的情形? 我這款隨身碟是apacer ah553 128g的

但是寫入速度 明顯差異過大 快時可有320mb/s 慢時只有241mb/s

以下是三次測試 本魯有隔幾個小時來測 第二次沒測4K 因為4K寫入很悲劇

第一次

CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 350.861 MB/s
Sequential Write (Q= 32,T= 1) : 321.020 MB/s
Random Read 4KiB (Q= 32,T= 1) : 9.698 MB/s [ 2367.7 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.005 MB/s [ 1.2 IOPS]
Sequential Read (T= 1) : 382.948 MB/s
Sequential Write (T= 1) : 354.619 MB/s
Random Read 4KiB (Q= 1,T= 1) : 9.542 MB/s [ 2329.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.012 MB/s [ 2.9 IOPS]

Test : 2048 MiB [D: 0.0% (0.0/115.1 GiB)] (x9) [Interval=0 sec]
Date : 2017/08/05 8:39:31
OS : Windows 10 [10.0 Build 14393] (x64)


第二次

CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 338.315 MB/s
Sequential Write (Q= 32,T= 1) : 302.075 MB/s
Random Read 4KiB (Q= 32,T= 1) : 0.000 MB/s [ 0.0 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.000 MB/s [ 0.0 IOPS]
Sequential Read (T= 1) : 379.395 MB/s
Sequential Write (T= 1) : 348.082 MB/s
Random Read 4KiB (Q= 1,T= 1) : 0.000 MB/s [ 0.0 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.000 MB/s [ 0.0 IOPS]

Test : 2048 MiB [D: 0.0% (0.0/115.1 GiB)] (x9) [Interval=0 sec]
Date : 2017/08/05 16:55:58
OS : Windows 10 [10.0 Build 14393] (x64)

第三次

CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 340.539 MB/s
Sequential Write (Q= 32,T= 1) : 241.415 MB/s
Random Read 4KiB (Q= 32,T= 1) : 11.718 MB/s [ 2860.8 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 0.005 MB/s [ 1.2 IOPS]
Sequential Read (T= 1) : 387.555 MB/s
Sequential Write (T= 1) : 356.093 MB/s
Random Read 4KiB (Q= 1,T= 1) : 11.348 MB/s [ 2770.5 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 0.012 MB/s [ 2.9 IOPS]

Test : 2048 MiB [D: 0.0% (0.0/115.1 GiB)] (x9) [Interval=0 sec]
Date : 2017/08/05 20:56:05
OS : Windows 10 [10.0 Build 14393] (x64)

我想問問寫入速度愈來愈慢 是怎回事

我是說(Q= 32,T=1)的寫入 我想知道這隨身碟是不是生病了

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