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Plextor M6e PCIe SSD 256GB Review

The M6e features a full-blown PCI Express SSD in the new M.2 form factor.

The first native PCI Express SSD has finally arrived!

The Plextor M6e is the first native PCI Express SSD we’ve been able to get our hands on, so we’re excited to finally see what an SSD can do when it’s not hobbled by the SATA interface and its 550MB/s bottleneck. Instead of SATA or a 2.5-inch device, this drive utilizes the M.2 form factor along with a PCI Express interface, so it can plug into any late-model motherboard and is bootable. The M.2 interface was designed for notebooks as a replacement for mSATA, as it allows for much higher capacities along with different size devices, so it can be mounted in a wider variety of locations compared to mSATA. To create the M6e, Plextor took a “gum stick” drive and mounted it to a PCI Express 2.0 x2 add-in card. Since each PCI Express 2.0 lane allows for 500MB/s of bandwidth, the two lanes connected to this card allow up to 1GB/s of bandwidth, which is around 800MB/s after deducting overhead. This isn’t a massive increase over SATA 6Gb/s speeds, but it’s a decent bump.

Note: This review was originally featured in the June 2014 issue of the magazine.