Actually, in typical use, any difference in the transfer speeds is impossible to notice. I am working this from a bigger angle where I see fluctuations in all interfaces... Your NVMe high seq write result is significantly lower than what I would expect (about 600MB/s), although your end Total Score is close to the money. Your 4K is good there which makes me wonder as the 4K I am seeing everywhere is lower than the Z97....some significantly. On a M.2, I cannot get to 100MB/s low 4k random write speeds.