When comparing SteamOS vs Mythbuntu, the Slant community recommends SteamOS for most people. In the question“What are the best operating systems for a Home Theatre PC?” SteamOS is ranked 4th while Mythbuntu is ranked 13th. The most important reason people chose SteamOS is:
The OS natively supports Nvidia, Intel, and AMD graphics processors.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Native graphics processor support
The OS natively supports Nvidia, Intel, and AMD graphics processors.
Pro Streaming service integration (under development)
Valve is in talks with streaming companies such as Spotify and Netflix to bring their features to SteamOS.
Pro For entertainment, it just works
What media center software do for videos, it does for games (and later videos).
Pro Free and open source
Mythbuntu is an Ubuntu flavor of MythTV. Both MythTV and Ubuntu are completely free and open source, so by extension Mythbuntu is open source as well.
Pro Customizable
MythTV (and by extension Mythbuntu) has plenty of modules that allow users to display photos, listen to music and watch movies. All of this is done from the main menu.
Cons
Con Hard to install
If you've installed Arch you're probably fine, but for those used to simple installs like (Ubuntu to name just one) you should prepare some patience, determination, and painkillers. Good news is, it's getting better (it's very young).
Con Not built around the desktop experience
SteamOS is, first and foremost, meant to act as a gaming console - it doesn't ship with even some of the most basic applications, such as a file manager or image viewer. As a result, using SteamOS as your primary operating system would require a fair bit of work.
Con Dated UI
The UI is dated and not very pleasing to the eye.
