You can tell a difference for sure. Video is smooth, I don't get anymore chop on youtube, etc. I just tested hulu and its smooth as silk. The performance overall is just a lot more quick in general. I dont get the hangups I used to when running multiple apps at the same time, etc.
One of my "performance tests" I checked after I had the new drive in was on the STEC SSD
, when I would close FireFox and immediately try to open it back up I would get a popup stating that FireFox had not finished closing yet... that has gone away on the RunCore SSD
I did notice a bit of a pause (2 seconds) when trying to open FireFox while installing Office 2007 at the same time, so it's not 100% absent of hangups, but Office 2007 is a big install so I'll let it slide
Overall I can say that you will not be disappointed with this drive.