Razer Game Booster

I dunno... It actually feels more of a hassle for me as I like to multitask.

I didn't find much difference while playing with it either :/
About the recording feature - I used it couple of months ago, and I remember it did quite well performance wise (it did not change my fps in the games I recorded although my pc is pretty slow :D) and the recordings were really small but the quality of the videos was not that great. If performance is the main factor I'd say it is pretty good, but if you want recordings with really good quality I believe you could find a better program to use.

Tested it a while ago with Dota 2 and it slowed everything down

Uninstalled it after that..

I tried it but it wasn't useful.

I see no notable performance boost or loss. but it adds a inconvenience that you have to start it everytime.

What happened to it being a booster...

Useless if you have like 1-2gb of ram maybe...? Thats a pretty big maybe though...

So I guess everyone's experience was somewhat similar.

My guess is that it's aimed at people who don't know themselves, what should be left on and what should be shut down while gaming. Since I only run Steam, Antivirus and sometimes Winamp while gaming, and I have actually disabled most of the useless default features which eat up a lot of resources - it does nothing.