AMD RAID controller VS Windows "RAID"

[Guest]

Hey guys, right now, I am running a RAID 1 of 2x Seagate barracuda 7200.14 1tb. this RAID is running with the windows "RAID controller" (I set up the disks through the disk management console). My motherboard is an ASUS Sabertooth 990fx R2.0 (with an SB950 southbridge) and I had a few question:

1. What is the difference between these two options in the UEFI: " [RAID] Legacy ROM" "[RAID] UEFI Driver"?
2. Does this controller support TRIM for my SAMSUNG 840 Evo 256gb SSD?
3. When running in RAID mode, do the non-RAID devices run in AHCI mode?
4. Since the two options are software based (AMD southbridge sends calculations to CPU, that's a fact) then do they both have the same load on the CPU?
5. Windows "RAID" requires a dynamic disk format rendering it incompatible with many OSes and softwares, does the AMD RAID require these dynamic disks as well?

Thanks in advance for all of your answers

[Vitalius]

1. What is the difference between these two options in the UEFI: " [RAID] Legacy ROM" "[RAID] UEFI Driver"?

Does this controller support TRIM for my SAMSUNG 840 Evo 256gb SSD?

When running in RAID mode, do the non-RAID devices run in AHCI mode?

Since the two options are software based (AMD southbridge sends calculations to CPU, that's a fact) then do they both have the same load on the CPU?

Windows "RAID" requires a dynamic disk format rendering it incompatible with many OSes and softwares, does the AMD RAID require these dynamic disks as well?

1. Legacy ROM is for older OS RAID compatibility. UEFI Driver is for newer OS which can interact with the BIOS UEFI through the OS.

Not sure.

I believe so. Or they run in RAID mode as RAID 0 devices. Because you can RAID 0 a single drive. It makes no sense. It's not supposed to.

What do you mean by "Both"? The controllers you mention in the Title, or the two options you mention in 1? Assuming the Title, I'd assume it's very similar, if not the same. 

No. I believe that since you are RAID 1ing the drives, they should be compatible in any system by themselves. Not sure though, but it makes sense to me. Wait for more answers.