Originally Posted by ManOfSteele
Unfortunately, thats not how processors work.
The 5th core is purposely underclocked so it can do that background tasks without tasking the higher powered cores, therefore saving power. 500Mhz is the perfect clock speed for something like that, powerful enough to handle the tasks, but low power enough to save battery. Overclocking that core would result in a drop in battery life, mainly because of the way that Android handles background tasks.
Moreover, I'm sure that Nividia used less powerful and less expensive Silicone for the core, so messing with that particular core could lead to some mad mojo.
Granted, if you were experiencing some lag or slowdowns when switching from apps (Which I couldn't even imagine happening due to the other 4 cores snapping into action with hardware acceleration), you could overclock the companion core for better and smoother BG tasks.
If anything I would want a custom kernel and governor for the core, to maximize my battery life even more (Which is why I started this thread).
Its lower powered for menial tasks, it doesn't necessarily always have to run at max speed, so I don't see how bumping it up slightly would result in a decrease in battery life. Especially when compared with the 4, 1.3ghz cores potentially remaining idle for more duties.
Anyway, that was just an after thought as I was typing. If OC'ing is possible, I wonder how that companion core would work. You would almost need a completely separate set of settings for it if you wanted to undervolt or do anything with it.
Kernel dev's are going their work cut out for them..