Barely noticing any difference with the real SSD (crucial m550) I used on previous mini. Consider it as a viable option when configuring a custom 2014. My usage is quite light to be honest, but probably that's true for most mini users. The fast 128gb pcie ssd is probably enough to keep the most frequently accessed data. Plus if you order a fusion, as a bonus inside the mini you get all the cables, sockets and plastic brackets to use if one day (after warranty expires) you wanna open it and upgrade to bigger drives (apple stick + 2.5").