### Not All Quad-Cores are creative equal, still putting together a working list. ###
### CM9/10 & AOKP is not an App Problem! The Problem is CM9/10 / AOKP Build.prop! Please Contact your ROM maker due to incompatibility!!!###
What is it? Its a fairly simple App that will put CPU 1/2/3 OFFLINE when the screen turns off. Once the screen comes back on, it will allow CPU 1/2/3 back ONLINE.
How does it work? Since we have Quad Core CPUs, we have a CPU 0 and a CPU1/2/3, core 0,1,2,3 while the screen is off we really only need to have 1 core active "CPU0", this App will make sure CPU 1/2/3 shuts off while the screen is off, then resumes normal usage when the screen comes back on.
Compatibility? Works with any Quad Core Devices!
Battery Saving? Battery savings all depends on Usage & idle times.