I'm a bit confused. Can someone tell me what a PSI-SSD is compared to a regular SSD. Are they both RAM modules? Do they both do the same thing? I know the PSI plugs into the mo/bo and a regular SSD has a SATA cable. Is one better than the other?
They are not "RAM modules". They are basically hard drives, but with no moving parts, and way, way faster than a traditional spinning hard drive.
PCI SSD is somewhat faster that a regular SATA, and way more expensive per GB. They are still quite new.
But 'faster' may simply mean opening a file in 0.3 secs vs 0.4 secs.
Plus, you have to verify your motherboard can actually boot from that. Not all can.