ATTO, PCMark 8
The regular M6e BE drive is able to breach the SATA barrier of around 600MB/s, but this still puts the PCIe x2 drive well behind the 2,000MB/s achieved by the PCIe x8 G.Skill. However, caching frequently-used data via PlexTurbo shows that DRAM is significantly faster at reading than flash-based memory.
There's not a lot of difference between the M.2-to-PCIe and SATA 6Gbps performance in the read test. Adding the DRAM-caching technology increases the speed by up to 8x. The proviso is that you need to be using certain data over and over again to benefit from it.
Any score above 5,000 marks is considered good for the storage test contained within the benchmark. Storage bandwidth, on the other hand, is an aggregate of the various subtests.
Does the non-Turbo Plextor feel any faster than a regular premium SSD? Not really, because it's impossible to tell the two apart unless we resort to benchmarks.