obviously, I'm aware of the speed differences. As I said, I had a version of this running for a year or so. That's been replaced by a full PC running as a file server on gigE.
Mine held gigabyte sized files (home theater storage). Yes, it's vastly slower. The point is that it's fast enough to feed such a server, and if you're using wifi it's fast enough, period, given how slow most wifi networks end up. So long as it can feed the server fast enough
to not cause buffering issues, then how fast it is becomes irrelevant.