To me the rate of info one generates in any metric doesn't count. The only thing that matters is the quality one is able to generate.
The underlying message here is very important to consider in this discussion. In many ways, the average human may already be outputting intelligent information about as fast as he or she can. If we really could think substantially faster than we can speak or type, then surely we could speak in mathematical formulae and in beautiful poetry at all times. When solving a complex mathematical problem, it seems most people have to stop and think periodically while writing steps and results. The processing is slower than the output. The main area where most humans are quick seems to be in visuospatial cognition, and this is perhaps the main area where we lack proper output capabilities. We need a parallel output system to complement the current serial output. Maybe if we had 64 mouths and ears we could convey information more quickly. Alternatively, a high resolution EEG could perhaps read all our muscle tones simultaneously. The tricky thing would be in training ourselves to output with all our muscles simultaneously, and the result might be a show in itself.