Speaking of block size...what's Monero's capacity in terms of txs per second?
Monero has a very scalable block size solution. It is "adaptive" as it changes with the amount of information going through the Monero network.
Okay, thanks. I'd prefer a number, but what you wrote will do.
What he said was right. There is no hard limit in the protocol. Noodle Doodle's recent benchmarks on an i7-2600K show 2.5 ms average tx verification time (per core) so that would max out at 1600 tx/second.
Usage at that level would require a lot of bandwidth and CPUs slower than a 2011 quad core desktop would not be able to keep up and would need to drop off.