Yet anothe USB 3.0 flash. Verbatim.
Speed test:
Category: Flash
Yet another USB 3.0 flash drive speed test. This time Patriot Memory Supersonic Boost XT 32GB USB 3.0 Flash Drive (PEF32GSBUSB). Advertised to have up to 150 MB/s Read and up to 30 MB write speed.
Just unboxed FAT32 results are:
Testing yet another USB flash drive speed. TS32GJF300. This one is slow.
Some new SD cards speed test
TDK 32 GB SDHC UHS-I Class10 t78717
Transcend Premium 32 GB SDHC UHS-I Class10 TS32GSDU1
SanDisk Extreme SDHC UHS-I Class10 SDSDX-032G-X46
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| Sequential Read (MB/s) | 52.090 | 88.012 | 46.786 |
| Sequential Write (MB/s) | 14.136 | 38.338 | 42.927 |
| Random Read 512KB (MB/s) | 44.635 | 69.408 | 40.880 |
| Random Write 512KB (MB/s) | 0.659 | 13.426 | 29.822 |
| Random Read 4KB (QD=1) (MB/s) | 2.818 | 2.540 | 3.031 |
| Random Write 4KB (QD=1) (MB/s) | 1.077 | 0.509 | 1.600 |
| Random Read 4KB (QD=32) (MB/s) | 2.825 | 2.736 | 2.877 |
| Random Write 4KB (QD=32) (MB/s) | 0.852 | 0.423 | 1.529 |
Fastest flash yet. SanDisk Extreme:
USB 3.0
USB 2.0
Speed in USB 2.0 port
Speed in USB 3.0 port
cardreader SanDisk ImageMate All-In-One SDDR-289
Read/Write spead with usual cardreader added to old post
To get understanding of why cheap USB Flash are cheap and some expensive are expensive. Let’s compare two 32GB flash drives from SanDisk. Cheap one is SanDisk Cruzer 32GB SDCZ36-032G. Expensive one is SanDisk Extreme USB 3.0 SDCZ80-032G.
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| Sequential Read (MB/s) | 16,452 | 91,141 |
| Sequential Write (MB/s) | 3,828 | 76,589 |
| Random Read 512KB (MB/s) | 16,371 | 83,097 |
| Random Write 512KB (MB/s) | 0,548 | 6,252 |
| Random Read 4KB (QD=1) (MB/s) | 2,788 | 10,368 |
| Random Write 4KB (QD=1) (MB/s) | 1,795 | 9,994 |
| Random Read 4KB (QD=32) (MB/s) | 2,693 | 9,12 |
| Random Write 4KB (QD=32) (MB/s) | 0,22 | 2,936 |
| Price (approx.) | 20$ | 40$ |
Speed test done with CrystalDiskMark 3.0.1