Posted by CANbike on Wed, 7 Aug 2013

Benchmark: Lexar JumpDrive S70 (16GB)

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The Lexar Jumpdrive S70 (16GB) is an older generation USB 2.0 flash drive commonly found at major electronic retailers for a cheap price. In addition, it is also found in two-packs or three-packs at general retailers like Walmart.

The benchmarked burgundy version of the Lexar Jumpdrive S70 (16GB) is no longer listed on Lexar’s website and has been replaced with a grey version. The difference in performance, if any, is unknown. In addition, it is two generations old as the USB 3.0 S73 model, and the smaller USB 3.0 S23 model have been released. Both models have been benchmarked (see USB 3.0 Benchmark: Lexar Jumpdrive S73 and Review: Lexar Jumpdrive S23 for details).

Contained in the Lexar Jumpdrive S70 (16GB) package is a mini-lanyard. It’s small and useful for holding onto the flash drive or attaching it to keychain ring. As a side note, it would be nice if Lexar included a lanyard with every flash drive.

Aesthetically the burgundy color is ugly and over powering. In addition, the grey back is also ugly looking. Nonetheless, aesthetics is a minor point. The drive will be mainly judged based on construction quality, design, performance, and price.

Construction quality is good as the body is made of a thick solid plastic. It’s a little large but still pocketable. In addition, the retractable switch for the USB port is smooth and relatively firm. However, it does flex with a bit of excess force.

Performance, on the other hand, was surprisingly poor and disappointing for a Lexar product. Read speed was good at 19.30 MB/s. However, write speeds were terrible with an average speed of 2.48 MB/s. To double check results, the benchmarks were run multiple times and write speeds were consistently slow.

Overall the Lexar Jumpdrive S70 (16GB) should be avoided due to the terrible write speeds. The construction quality and design are good but average. There is nothing distinctive about it.

Even when on sale, the Lexar Jumpdrive S70 (16GB) is not worth it as there are better options for the money. See USB 3.0 Benchmark: Lexar Jumpdrive S73 for a much faster performing and similarly designed USB flash drive.

Benchmarked below is the burgundy version of the Lexar Jumpdrive S70 (16GB) formatted to have a single ext2 partition.

Device Information

fdisk -l  /dev/sdi

Disk /dev/sdi: 16.0 GB, 16039018496 bytes
255 heads, 63 sectors/track, 1949 cylinders, total 31326208 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00009dca

   Device Boot      Start         End      Blocks   Id  System
/dev/sdi1            2048    31326207    15662080   83  Linux

Device Read Benchmark (USB 2.0)

hdparm -t  /dev/sdi1

/dev/sdi1:
 Timing buffered disk reads:  58 MB in  3.00 seconds =  19.30 MB/sec

Device Write Benchmark: 1MB x 1000 (USB 2.0)

dd if=/dev/zero of=tempfile bs=1M count=1000 conv=fdatasync,notrunc
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 483.162 s, 2.2 MB/s

Device Write Benchmark: 10MB x 100 (USB 2.0)

dd if=/dev/zero of=tempfile bs=10M count=100 conv=fdatasync,notrunc
100+0 records in
100+0 records out
1048576000 bytes (1.0 GB) copied, 487.217 s, 2.2 MB/s

Device Write Benchmark: 100MB x 10 (USB 2.0)

dd if=/dev/zero of=tempfile bs=100M count=10 conv=fdatasync,notrunc
10+0 records in
10+0 records out
1048576000 bytes (1.0 GB) copied, 302.405 s, 3.5 MB/s

Device Write Benchmark: 500MB x 2 (USB 2.0)

dd if=/dev/zero of=tempfile bs=500M count=2 conv=fdatasync,notrunc
2+0 records in
2+0 records out
1048576000 bytes (1.0 GB) copied, 494.247 s, 2.1 MB/s

Device Write Benchmark: 1000MB x 1 (USB 2.0)

dd if=/dev/zero of=tempfile bs=1000M count=1 conv=fdatasync,notrunc
1+0 records in
1+0 records out
1048576000 bytes (1.0 GB) copied, 431.616 s, 2.4 MB/s