You can also install the software on them on a raspberry pi or something, and set it up to boot into it automatically.
For the price, it can give you better Network connection and moderately better performance. It's not super significant though, just another way to do it if you have a spare device laying around.
Yikes, if a Raspberry Pi can handle it, then something must be really wrong with my spare PC setup. It's got a 4690k and a GTX 950 in there. Don't know what it could be though, fiddled with every setting I could think of.
Yeah, it doesn't need much on the side that's being streamed to.
Biggest thing is that it's pretty sensitive to network speed, so wired is usually noticably better. Depending on the OS you have running, you might also be able to make some tweaks to prioritize the steam link software, network and graphics output.
If you have more than one core, chances are that won't make a difference though.
It's also a decent idea to temper your expectations. You're not going to be getting 60fps at high resolutions, or super great input latency.
I know that some people have higher standards, and so two people can be getting the same experience and ranking it radically different.
My setup is over a wired connection, and it's reporting zero packet loss. I figure it has to be something on the PC being streamed to. I could try prioritization, but yeah, quad core, so not sure. Worth a shot.
I got 60fps when I was running it through my TV's app, so this result certainly surprised me.