Plextor PX-256M5Pro Xtreme 256GB Solid State Drive Review @

@ 2013/04/02
On the surface, the M5Pro Xtreme may seem more evolutionary than
revolutionary, but Plextor's engineers have put a lot of effort into this
upgraded version of the M5 Pro. Along with the recently released Xtreme
firmware, the M5Pro Xtreme uses a newly engineered and redesigned PCB board
that combines Marvell's 88SS9187 controller with Toshiba's latest 19nm
Toggle Mode MLC NAND flash. As you'd expect, this combination produced some
impressive performance numbers. In our sequential read and write tests, the
PX-256M5Pro Xtreme was able to read at speeds as high as 558 MB/s and write
at speeds in excess of 436 MB/s. It also did reasonably well our random
write tests, producing more than 63,000 IOPS at low queue depths. Increasing
the queue depth did lead to better results. However, the M5Pro Xtreme still
had a hard time keeping up with the latest offerings from OCZ and Samsung.

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