That's not true. It depends on the kind of workload, which can be CPU-bound, IO-bound, network-bound, etc... If a workload is truly distributed, simply fetches

That's not true. It depends on the kind of workload, which can be CPU-bound, IO-bound, network-bound, etc... If a workload is truly distributed, simply fetches data blocks to process then goes computing for a while (Example: folding@home), the amount of bandwidth doesn't matter. Also, some people have substantial amounts of bandwidth to their house :)