I have the Gaming M7 with the same CPU and a 980Ti. Do not screw around with ram drives. Either run two Samsung 850's in RAID 0 or two Samsung 950 Pro's in RAID 0. I've been through having one 950 pro, one 840 pro, two 840 pros and now I'm running two 950 Pros. Single 950 Pro will have some I/O stall issues where two absolutely do not. And the read speeds are insane. That said, two 840/850 normal SSDs in RAID 0 showed very respectable numbers and didn't show the I/O stalls, either.
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[edit] Couple more.
950 Pro RAID 0 results. I have no idea why it has that dip between 128 and 4k...didn't show that in the run right after I installed the OS. It was steady well over 2.3GB/s. /shrug
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840proRaid0_z170a_i7-6700k_CrystalDiskMark.png950proRaid0_z170a_i7-6700k_CrystalDiskMark.png
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