I've looked at the [original question][1] from a while back. But that is too early to give a definitive answer. I want to know when it's OK to ask about hardware recommendations if it's OK at all. 

For instance is this on topic?

 - http://askubuntu.com/q/420086/10698

Also what questions should be avoided.


  [1]: https://meta.askubuntu.com/questions/1186/are-hardware-recommendations-considered-off-topic