Thanks for your reply. It's good advice.
Actually, after I posted my question I googled for other alternatives and found an article which linked to Romex Primo RamDisk on top, so I'm reading about it now. Romex also has PrimoCache I see. So you're right, there are good alternatives to ROG RAMcache III out there.
I'm not sure yet, but I think Primo RamDisk (or similar) may be best suited for my use. Will have to read carefully the feature specs of both Primo RamDisk and Primocache and see which one offers the most advanced fine tuning. I don't need to load an entire disk into RAM but only some game files (program and game assets primarily) so I'd like if I could specify which files to load into memory, not just which disk to monitor.
I will also use a fast SSD but I feel that loading things into memory, which they say is 100x faster to load from later, may be needed/wanted anyway. We'll see, I can add software later, after testing the SSD in gaming. But this is also one of my main reasons for buying lots of RAM.