From EightForums:

XweAponX said:

I have a helluva enough bad time getting my Router to deliver N speeds. which my iPhone is supposed to be able to use, but the highest speed is still 54mbps. My experience has been, that my router will deliver full N speed only when all of my WiFi devices are set up for N. But it is an older WRT110 router.

My friend and I have the same problem with our Billion (BiPAC 7800N) router.

It will not run faster than 15 Mb/s even if the only wireless devices around are using 802.11n dongles.
No amount of tinkering with the settings makes any difference (e.g. bandwidth, channels, security, etc.).

I created a thread here about it:
Billion BiPAC 7800N - Low Wireless Speed

It sounds nice in theory, but I'd be surprised if this 802.11ac system actually delivers more than ~200 Mb/s of useful throughput.
Even that would be a lot faster than our ISP provides and we only get a fraction of that because of the cabling.

That's useful for streaming HD stuff from a NAS to your media center/tablet/phablet/whatever (even on "n" it does have some hiccups). Which is admittedly a very limited application, and not even 100% sure about it.

Unless someone moves his backside and gives a decent mobile Internet (as I doubt anyone will place cables to support better speeds than 1-3 Mbit outside of major cities), that tech is useless.

I already told why it is useless in my opinion. The bottleneck is internet speed even for wifi-n. Even 1TB wifi remains useless to me and a large amount of people because there is no way in heck to get more than 1-3 Mbit/s of "theoretical upper limit" in internet speed. Due to lack of infrastructure in the countryside. Makes no sense to put optic fiber for a few homes per km2

bobafetthotmail said:

I already told why it is useless in my opinion. The bottleneck is internet speed even for wifi-n. Even 1TB wifi remains useless to me and a large amount of people because there is no way in heck to get more than 1-3 Mbit/s of "theoretical upper limit" in internet speed. Due to lack of infrastructure in the countryside. Makes no sense to put optic fiber for a few homes per km2

Your opinion isn't motivation for what I wrote. Maybe you should have wrote useless in your case but certainly not for others.

That entire article was just as pessimistic but I'd be willing to bet that guy has never even tried this out.

Nothing like hearing it from the horses mouth rather than an uninformed opinion from some writer trying to make a name for himself. I'm sure at least a few of us here will be happy to hear my opinion and the results I posted on this. After all I did spend the 300 bucks to make it happen.

Is a matter of fact the throughput to my ISP went from 20Mbps to 35Mbps just because I eliminated the wireless N bottle neck. Moving files is also three times faster, just as fast as my wired connections now. I'd have a hard time calling that useless.

ah, nevermind then.