Samsung 850 EVO delivers excellent performance and is packed with features such as Deep Sleep and eDrive support that are critical for mobile storage. The mSATA and M.2 interface drives offers same performance as the SATA drive but at reduced price, making them even more attractive.

Excellent performance; TCG/Opal V2.0 and IEEE1667 security support; Deep Sleep support; Low power usage; Higher endurance rating; 1TB option for mSATA drive; Price; 5 year warranty

High queue depth lags slightly behind other drives; No NVMe support for the M.2 drive; No 1TB option available for M.2 drive

The SSD 850 EVO M.2 is the best-rounded SATA M.2 SSD we've tested so far, offering a superb blend of performance, endurance, affordability, and killer software.

Excellent all-around performance; Field-leading SSD utility software; Competitive pricing for M.2 form factor

SATA-bus only; Maximum capacity in SSD 850 EVO M.2 line is only 500GB

The 850 EVO strengthens Samsung's grip on the mSATA SSD market with good performance and even lower power consumption.

Very power efficient; Overall strong performance; 1TB of flash in very small form-factor

Very power efficient; Overall strong performance; 1TB of flash in very small form-factor; The older EVO 840 EVO mSATA outperformed it in some categories

Samsung has morphed their successful 850 EVO drives into M.2 and mSATA form factors to meet the demands of shrinking devices while keeping all of the great aspects of the 2.5″ drive in a tiny package thanks to their 3D V-NAND.

Decent launch MSRP's with availability of all lines and capacities on launch morning. Precisely how it should be done. The Samsung 850 EVO line carries a 5 year warranty, rated at 40GB/day for 120GB/250GB (75 TBW) and 80GB/day for 500GB/1TB (150 TBW).

From a technological perspective, the new 850 EVO drives do not bring anything new to the table since it's essentially the 2.5" 850 EVO in a smaller form factor, but what it does bring to the market is more selection in mSATA and M.2 form factors using the SATA protocols.

Samsung's 850 EVO SSD debuted in December inside the usual 2.5" case. Now, the drive is spreading to smaller mSATA and M.2 form factors....

I am using Samsung 850 Evo 250G x 2 for Raid 0 array function. combine stripping of 500G of super Fast SSD disk space. of cos rebootable and speed bit my 256G PCIE Standalone SSD.

The appeal for mobile device or small PC format owners is obvious, both formats offer high capacity, desktop like performance, encryption and low power consumption. The whole package is backed by a 5 years limited warranty. Who say one can not have the cake and eat it too?

Excellent price at puxma is and delivered promptly. Easy to fit into my MacBook pro. Not much data stored yet so difficult to tell if it makes the expected difference in performance though some benefit already

Size and capacity

Cost