Samsung's M.2 SM951 PCIe SSD was never originally intended to be sold on its own but thankfully the 128, 256 and 512GB models are showing up on Newegg and other sites and the speeds it can reach are very impressive.  The Tech Report tested the 512GB model and saw it beat the Intel 750 Series in IOMeter at a queue depth of one, though the Intel SSD still shows off its prowess at higher queue depths.  Their testing showed that the speed of the flash produces enough heat that the drive throttles itself so you should consider rigging an active cooling solution if you do pick up this drive.  Check out their full review to see some very impressive numbers and boot times.

"Samsung's SM951 SSD squeezes a quad-lane PCIe Gen3 interface onto a diminutive M.2 form factor. It offers incredible performance under the right conditions, but it also struggles in some scenarios. Our in-depth review explains the drive's strengths, weaknesses, and unique enthusiast appeal."

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