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JMicron JMF667H Firmware Preview Testing with L85A, L85C and A19 Flash

By: Chris Ramseyer | SSDs in Storage | Posted: Jun 2, 2014 2:45 am

Desktop Test System




Lenovo W530 – Mobile Workstation



We use two systems for SSD testing. The desktop runs a majority of the tests, and the Lenovo W530 runs the notebook power tests as well as the real-world file transfer benchmark.



ATTO - Baseline Performance


Version and / or Patch Used: 2.34




The fastest model we tested in the lot is the 240GB drive with Toshiba A19 flash. This model achieves 550 MB/s sequential read and 470 MB/s sequential write. The 128GB A19 model did achieve a higher sequential read speed in ATTO, nearly 560 MB/s, but the write speed was 327 MB/s.


The JMF667H drive with L85A (256GB) scored 533 MB/s sequential read but only 315 MB/s sequential writes. The L85C (128GB) scored well when reading sequential data, 556 MB/s, but the writes were all the way down to 155 MB/s.

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