Crucial didn't release a new SSD at Computex 2015, but the company did launch an updated version of Storage Executive with Momentum Cache. Momentum Cache is the trade name for Crucial's new DRAM cache system, which follows similar software from Samsung and SanDisk.
The software cache scheme buffers random writes to system DRAM and then passes the data to a Crucial SSD sequentially. This speeds up the write process and also reduces wear to the flash.
Momentum Cache works with nearly all modern Crucial SSDs going back to the M500. Micron SSDs also support the feature, though you'll need to install a Micron-specific version. At this time, Momentum Cache only works on the system's boot drive.
SSDs are still no archival media, and they will corrupt after a year or two without power. But if you are the sort of person who travels a lot and unplugs your PC for 2-3 months at a time then it is not a real concern anymore.
I'm so out of touch that I didn't even know that was "a thing"
Really? 5 years ago? Because I've gone on vacation for about a month and my Windows wont even start anymore. And that was about a year ago. Heard a rumor that the 3D stacking technology thing managed to eliminate this problem and i was waiting for some more good news about that before buying a new SSD.
A $60 240GB SSD is the reason why you don't feel a big performance increase over your HDD.
But how old was the SSD? The model, not the particular one that you own.