When Android 4.0 Ice Cream Sandwich was announced we were told that, like Honeycomb before it, more emphasis would be placed on the graphics processor. We even saw a new addition in the Developer section of the Settings that lets users "force GPU rendering". What is the GPU? The GPU is the Graphics Processing Unit. It's very much like the CPU, but instead of crunching numbers and taking care of tasks for the operating system and hardware, the GPU renders graphical information and puts it on the screen for you. The CPU can process graphical instructions just fine, but doing so takes time ...