said by d4m1r:1) Just tested it at 6:30pm on a weekday afternoon. I am getting 24-28MBps when my laptop is directly connected to the router.
2) Through powerline (downstairs and other side of the house) I am getting 19-24MBps on my laptop. This should be enough to stream 1080p content.
The question though is how consistent that is. I used to get 25-35 Mbps at certain times but at other times, esp. when my wife was at home, I'd sometimes run into glitches streaming even 8 Mbps content. It's probably due to noise changes on the circuits.
The problem with powerline is that it is not incredibly stable. For surfing the web it's fine, but for streaming video it can be more problematic, even when you think you're getting 20+ Mbps speeds.
said by TypeS:It most likely gets 200Mbps full duplex under perfect conditions. But home electrical wiring was never laid out for carrying data signals so real world you will never see it.
Actually no, since most (200 Mbps) powerline adapters don't even have gigabit Ethernet connections. They usually have 100 Mbps Ethernet connections... and basically never achieve that. As mentioned, expect full duplex speeds well under 50 Mbps, and often below 20 Mbps with minimum speeds sometimes as low as just a couple of Mbps or even 0 for brief periods... hence the problem with video streaming.