mak1skav Is this the same card that is included with the ASRock TRX40 Creator motherboard? There is a build video in Youtube using one and the transfer speed looked quite good.

TheLostSwede that's a "fake" RAID card, as there's no local cache or battery backup. That's just as useful as soft RAID.

I believe the article is incorrect where it describes the DIP switches on the ASRock 4x4 AIC (see above):ASRock's implementation supports multiple AICs, not merely four M.2 SSDs on a single AIC.This graphic clearly shows 4 x AICs at lower right:If anyone is interested in some slightly dated documentation,ASRock's Tech Support responded very promptly when werequested documentation for designing a bootable RAID-0 arrayon an AMD TR system using this Ultra Quad M.2 card:Probably NOT: check with the seller, to be sure.The Gen4 version was only announced very recently, sothere's a good chance the Gen3 version is the one thatis included with the ASRock TRX40 Creator motherboard.I don't see any AIC in this documentation, just 3 integrated M.2 ports:EDIT: found this at Newegg's product page:-and-Latter is NOT listed under "Accessories" however.Hope this helps.For desktop systems, a functional substitute for an on-card batteryis a UPS / battery backup for the entire system, of which there arenow many to choose from e.g. APC now offers versions thatoutput a pure sine wave, instead of a digital "stair-step" approximation.The one big disadvantage of an OS "software RAID" is that Windows will not boot from such a software RAID.I can conceive of a way to make an OS software RAID bootable, e.g. by writing config files to a USB thumb driveand choosing a related option in the motherboard's BIOS: but, MS has chosen NOT to consider such an option.On the other hand, with so many cores in modern CPUs, an otherwise idle core is availableto do the computation that a dedicated RAID processor performed in older implementations.Think of "bifurcation" as moving that "dedicated RAID controller" back into the CPUto perform as a general-purpose central processor.Re:See:When a RAID-0 array is enabled, the caches that may exist in each M.2 SSDare effectively summed, to produce a much larger "aggregate" cache.The MiDrive goes even further by moving most recently used files into SLC,and moving the least recently used files into QLC.I expect that we are now seeing only the beginning of extraordinaryengineering possibilities, now that storage vendors have recognizedthe upstream potential of x16 expansion slots.