I was not trying to be argumentative, but you said it only really benefits computers with 2GB or under, this of course is not true.
The reason I mentioned ReadyBoost is it's a very quick (30 seconds) way to get a benefit, and it will improve your C drive and any other HDD's in the system. Plus most people have a USB memory stick available to try.
Perfect world is all your storage on SSD, but that's cost, plus time to install / setup new Windows and software. That said it's surprising quite quick when using a quick USB stick, as Readyboost moves small random access files to the stick, and keeps larger storage data on the HDD. It's surprisingly quite a fluid improvement once the Readyboost has cached it's data.
It's also quite fascinating to watch in performance monitor, as once enabled you see all the cached data building, then you can watch all the cache hits that are happening. If nothing else it's an education just to test.