USBメモリ&ポータブルSSD読み書き速度忘備録

私が持っているUSBメモリをCrystalDiskMarkにて計測してみました。

USBメモリ

シリコンパワー USBメモリ 128GB USB3.2 Gen1 (USB3.1 / 3.0 / 2.0 互換) 小型 防水 防塵 耐衝撃 Mac対応 J09 SP128GBUF3J09V1K

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   184.508 MB/s [    176.0 IOPS] < 45213.35 us>
  SEQ    1MiB (Q=  1, T= 1):   184.649 MB/s [    176.1 IOPS] <  5672.79 us>
  RND    4KiB (Q= 32, T= 1):    13.046 MB/s [   3185.1 IOPS] < 10030.30 us>
  RND    4KiB (Q=  1, T= 1):     9.056 MB/s [   2210.9 IOPS] <   451.74 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):   170.136 MB/s [    162.3 IOPS] < 48906.99 us>
  SEQ    1MiB (Q=  1, T= 1):   168.953 MB/s [    161.1 IOPS] <  6195.62 us>
  RND    4KiB (Q= 32, T= 1):     3.169 MB/s [    773.7 IOPS] < 41105.83 us>
  RND    4KiB (Q=  1, T= 1):     2.725 MB/s [    665.3 IOPS] <  1501.28 us>

Profile: Default
   Test: 1 GiB (x5) [E: 0% (0/118GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/16 15:02:27
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

エレコム USBメモリ 32GB USB3.2(Gen1)対応グレー MF-LPU3032GGY

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   206.555 MB/s [    197.0 IOPS] < 40379.12 us>
  SEQ    1MiB (Q=  1, T= 1):   193.660 MB/s [    184.7 IOPS] <  5408.84 us>
  RND    4KiB (Q= 32, T= 1):    12.664 MB/s [   3091.8 IOPS] < 10331.04 us>
  RND    4KiB (Q=  1, T= 1):    11.962 MB/s [   2920.4 IOPS] <   342.05 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):    89.915 MB/s [     85.7 IOPS] < 89462.82 us>
  SEQ    1MiB (Q=  1, T= 1):    84.946 MB/s [     81.0 IOPS] < 12325.44 us>
  RND    4KiB (Q= 32, T= 1):     0.007 MB/s [      1.7 IOPS] <1732050.59 us>
  RND    4KiB (Q=  1, T= 1):     0.007 MB/s [      1.7 IOPS] <510604.16 us>

Profile: Default
   Test: 1 GiB (x5) [G: 55% (8/14GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/15 15:31:58
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

SanDisk Ultra Fit SDCZ430-032G-J57 USBメモリ 32GB USB 3.1

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   136.316 MB/s [    130.0 IOPS] < 61032.13 us>
  SEQ    1MiB (Q=  1, T= 1):   135.734 MB/s [    129.4 IOPS] <  7714.20 us>
  RND    4KiB (Q= 32, T= 1):     7.945 MB/s [   1939.7 IOPS] < 16440.68 us>
  RND    4KiB (Q=  1, T= 1):     7.658 MB/s [   1869.6 IOPS] <   534.06 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):    24.940 MB/s [     23.8 IOPS] <319972.96 us>
  SEQ    1MiB (Q=  1, T= 1):    24.308 MB/s [     23.2 IOPS] < 42019.89 us>
  RND    4KiB (Q= 32, T= 1):     1.363 MB/s [    332.8 IOPS] < 95037.72 us>
  RND    4KiB (Q=  1, T= 1):     1.343 MB/s [    327.9 IOPS] <  3045.30 us>

Profile: Default
   Test: 1 GiB (x5) [G: 55% (8/14GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/15 15:20:21
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

BAFFALO RUF3-K16GB-BL (16GB USB 3.2(Gen 1)

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   106.020 MB/s [    101.1 IOPS] < 78384.87 us>
  SEQ    1MiB (Q=  1, T= 1):   105.807 MB/s [    100.9 IOPS] <  9891.31 us>
  RND    4KiB (Q= 32, T= 1):     9.455 MB/s [   2308.3 IOPS] < 13833.83 us>
  RND    4KiB (Q=  1, T= 1):     8.463 MB/s [   2066.2 IOPS] <   483.22 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):    20.089 MB/s [     19.2 IOPS] <371106.20 us>
  SEQ    1MiB (Q=  1, T= 1):    23.067 MB/s [     22.0 IOPS] < 45415.38 us>
  RND    4KiB (Q= 32, T= 1):     0.007 MB/s [      1.7 IOPS] <2215752.28 us>
  RND    4KiB (Q=  1, T= 1):     0.006 MB/s [      1.5 IOPS] <619732.55 us>

Profile: Default
   Test: 1 GiB (x5) [E: 80% (24/30GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/19 22:20:26
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

Transcend 16GB JetFlash 790 USB 3.0 Flash Drive (TS16GJF790K)

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   144.048 MB/s [    137.4 IOPS] < 57823.87 us>
  SEQ    1MiB (Q=  1, T= 1):   140.963 MB/s [    134.4 IOPS] <  7425.21 us>
  RND    4KiB (Q= 32, T= 1):     7.734 MB/s [   1888.2 IOPS] < 16904.57 us>
  RND    4KiB (Q=  1, T= 1):     6.939 MB/s [   1694.1 IOPS] <   588.46 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):    62.405 MB/s [     59.5 IOPS] <132159.63 us>
  SEQ    1MiB (Q=  1, T= 1):    63.593 MB/s [     60.6 IOPS] < 16465.14 us>
  RND    4KiB (Q= 32, T= 1):     1.167 MB/s [    284.9 IOPS] <109412.43 us>
  RND    4KiB (Q=  1, T= 1):     1.085 MB/s [    264.9 IOPS] <  3772.23 us>

Profile: Default
   Test: 1 GiB (x5) [G: 55% (8/14GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/15 15:02:23
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

TOSHIBA UNB-3B064GW TransMemory USB3.0メモリ 64GB

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   136.443 MB/s [    130.1 IOPS] < 60994.62 us>
  SEQ    1MiB (Q=  1, T= 1):   136.328 MB/s [    130.0 IOPS] <  7687.07 us>
  RND    4KiB (Q= 32, T= 1):    11.956 MB/s [   2918.9 IOPS] < 10945.13 us>
  RND    4KiB (Q=  1, T= 1):    11.301 MB/s [   2759.0 IOPS] <   361.91 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):    11.516 MB/s [     11.0 IOPS] <654875.43 us>
  SEQ    1MiB (Q=  1, T= 1):    12.792 MB/s [     12.2 IOPS] < 53507.85 us>
  RND    4KiB (Q= 32, T= 1):     0.003 MB/s [      0.7 IOPS] <1939379.73 us>
  RND    4KiB (Q=  1, T= 1):     0.004 MB/s [      1.0 IOPS] <378519.49 us>

Profile: Default
   Test: 1 GiB (x5) [T: 14% (8/58GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/15 11:04:45
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

USB外付け ポータブルSSD

エレコム SSD 外付け 250GB USB3.2 Gen1 タイプC&タイプAケーブル付属

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   461.837 MB/s [    440.4 IOPS] < 18115.11 us>
  SEQ    1MiB (Q=  1, T= 1):   437.108 MB/s [    416.9 IOPS] <  2397.33 us>
  RND    4KiB (Q= 32, T= 1):   123.425 MB/s [  30133.1 IOPS] <  1059.29 us>
  RND    4KiB (Q=  1, T= 1):    21.240 MB/s [   5185.5 IOPS] <   192.45 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):   417.441 MB/s [    398.1 IOPS] < 20006.81 us>
  SEQ    1MiB (Q=  1, T= 1):   395.200 MB/s [    376.9 IOPS] <  2651.31 us>
  RND    4KiB (Q= 32, T= 1):   127.368 MB/s [  31095.7 IOPS] <  1027.91 us>
  RND    4KiB (Q=  1, T= 1):    39.231 MB/s [   9577.9 IOPS] <   104.10 us>

Profile: Default
   Test: 1 GiB (x5) [F: 0% (0/233GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/21 15:33:07
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

BUFFALO USB3.2(Gen1) 超小型ポータブルSSD(120GB) モスブルー SSD-PSM120U3-MB

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   447.044 MB/s [    426.3 IOPS] < 18715.60 us>
  SEQ    1MiB (Q=  1, T= 1):   425.488 MB/s [    405.8 IOPS] <  2462.25 us>
  RND    4KiB (Q= 32, T= 1):   116.776 MB/s [  28509.8 IOPS] <  1120.95 us>
  RND    4KiB (Q=  1, T= 1):    19.113 MB/s [   4666.3 IOPS] <   213.95 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):   412.406 MB/s [    393.3 IOPS] < 20234.75 us>
  SEQ    1MiB (Q=  1, T= 1):   383.267 MB/s [    365.5 IOPS] <  2733.12 us>
  RND    4KiB (Q= 32, T= 1):   130.481 MB/s [  31855.7 IOPS] <   998.88 us>
  RND    4KiB (Q=  1, T= 1):    39.020 MB/s [   9526.4 IOPS] <   104.66 us>

Profile: Default
   Test: 1 GiB (x5) [E: 49% (54/112GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/16 15:24:57
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

KINGSTON OM8PCP3512F-AI1 + 玄人志向 GW2.5-KRU3(USB 3.2 Gen1 外付けケース)

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):   455.015 MB/s [    433.9 IOPS] < 18388.60 us>
  SEQ    1MiB (Q=  1, T= 1):   433.632 MB/s [    413.5 IOPS] <  2417.16 us>
  RND    4KiB (Q= 32, T= 1):   136.179 MB/s [  33246.8 IOPS] <   954.83 us>
  RND    4KiB (Q=  1, T= 1):    22.942 MB/s [   5601.1 IOPS] <   177.96 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):   395.203 MB/s [    376.9 IOPS] < 21127.65 us>
  SEQ    1MiB (Q=  1, T= 1):   371.746 MB/s [    354.5 IOPS] <  2814.66 us>
  RND    4KiB (Q= 32, T= 1):   117.241 MB/s [  28623.3 IOPS] <  1116.55 us>
  RND    4KiB (Q=  1, T= 1):    37.516 MB/s [   9159.2 IOPS] <   108.72 us>

Profile: Default
   Test: 1 GiB (x5) [F: 30% (33/111GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/19 19:15:09
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

ドライブスペック的にはR=1308MB/sec W=653MB/Sec出るため、USB I/Fがかなり足を引っ張っているようです。

PassMark - KINGSTON OM8PCP3512F-AI1 - Price performance comparison

(参考)KINGSTON OM8PCP3512F-AI1(GF65Thin内蔵SSD)

Windows11が稼働中のシステムドライブでいくつかプログラムが動いている状態での計測なので、実際はもっと早いものと思われます。

------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
                                  Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

[Read]
  SEQ    1MiB (Q=  8, T= 1):  1227.867 MB/s [   1171.0 IOPS] <  6804.22 us>
  SEQ    1MiB (Q=  1, T= 1):  1228.652 MB/s [   1171.7 IOPS] <   852.71 us>
  RND    4KiB (Q= 32, T= 1):   302.057 MB/s [  73744.4 IOPS] <   432.21 us>
  RND    4KiB (Q=  1, T= 1):    34.871 MB/s [   8513.4 IOPS] <   117.07 us>

[Write]
  SEQ    1MiB (Q=  8, T= 1):   232.702 MB/s [    221.9 IOPS] < 35626.00 us>
  SEQ    1MiB (Q=  1, T= 1):   104.985 MB/s [    100.1 IOPS] <  9965.88 us>
  RND    4KiB (Q= 32, T= 1):   245.694 MB/s [  59983.9 IOPS] <   530.90 us>
  RND    4KiB (Q=  1, T= 1):    78.592 MB/s [  19187.5 IOPS] <    51.79 us>

Profile: Default
   Test: 1 GiB (x5) [C: 93% (444/476GiB)]
   Mode: [Admin]
   Time: Measure 5 sec / Interval 5 sec 
   Date: 2023/01/16 15:12:49
     OS: Windows 11 Professional [10.0 Build 22621] (x64)

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