[EricVanWyk]

Excuse my bluntness, but the Propeller doesn't come within spitting distance of the cRIO. The PPC in the cRIO runs at 400MHz and can execute up to 3 instructions per clock - theoretical peak at 1.2 Billion instructions per second. The propellor has 8 cores at 80MHz, but takes at least 4 clock cycles to execute a single instruction - theoretical peak of 160 Million instructions per second. Note: Those are theoretical peaks, neither will sustain that throughput with actual code.

Then look at the quality of the instructions the two processors provide - The propeller doesn't even have hardware support for multiply, the PPC has a full fledged floating point unit and multiple integer units.

Once you add the cRIO's FPGA, it is a "brought a twisty straw and wadded up paper to a battleship fight" scenario.

Adding a propeller to your robot will provide no measurable benefit.