Can I use a RAID card with chipset SIL3124 with no driver?

I have a software RAID card with a SIL3124 chipset. (This one).

As you configure the RAID via BIOS, is it possible to use this card with 3 disks (RAID 5) with any OS without installing any driver on that OS? (I'd like to use it with ESXi 5.5).

I don't understand what software RAID cards are, and what makes them different from just plugging 3 disks on the motherboard and setting a software RAID on my Linux distro.

While some OS might have the driver for that card built into the kernel, it is generally a bad idea to use these controllers, there's a good reason they are known as "fakeraid". If you can't afford a proper raid controller with it's own processing, cache and a BBU, just use software raid in the OS - the disks will be transferrable and hardware independent, while with fakeraid, there are no real advantages, besides having raid configuration in a separate menu instead of the OS