Just a little tip, for those who don't really have that much of RAM.
Most of the people have RK Launcher using 8.000K to 10.000K in memory. As you can se by this screenshot, in my computer it is using way less than that:
But how do I do it? Here are some easy steps:
1. Use a superlight theme for RK Launcher.
By following this step you will be basically using no theme at all. I kinda like it that way, so i think you will not hate it. I haven't uploaded it, because i don't think it is necessarry, you can create your own, but if you really need it I can upload it easly
First lets star