The only reason I can still work on my Mac
Memory Clean is a lifesaver!
Some updates ago, Apple broke (the garbage collection of) Yosemite so hard that my 16 GB of RAM are consumed within minutes.
The computer becomes totally unresponsive and eventually even shuts down altogether.
The only solution I found was running Memory Clean and let it automatically clean up my memory, if the available memory goes below 2 GB.
Works like a charm, can’t recommend enough.
binary riot about
Memory Clean - Monitor and Free Up Memory, v5.3