I use mine for everything. Most of my use of a computer is text editing,
email, web browsing and the like, but I also watch videos and compile source
code, etc.
I never have any performance issues.
Mine is an X60s with the Core Duo L2400 processor, running Trisquel 6 with
Gnome 3 desktop.
> Can it play back HD/full HD movies smoothly?
The native resolution is 1024x768 however you could connect it to an external
HD display.
I have tested this with the VGA output on a 1080p HDTV and videos at that
resolution played well in mplayer (I used smplayer, which is a graphical
frontend that you can use).
> Can it play free software games smoothly (which ones)?
I can play Neverball on it and it works well. I'm not much of a gamer,
though.
Probably OpenArena will also work well (settings turned down, depending on
the map).
2D games will definitely run well.
> How fast is it for other tasks and is it suitable at all (e.g. how fast
does it encode VP8/VP9 video, can it mine litecoins without overheating etc)?
When I build GNU Icecat from source, it takes about 2 hours on average.
Building a kernel also takes about that much time.
The machines are tested in "stress" and "xsensors" for maximum CPU
temperatures and all of them reach safe temperatures.
> Can it be used with a high resolution monitor e.g. 2560x1600 resolution?
The maximum resolution supported by the intel GMA950 graphics chipset is
2048x1536 (QXGA) but this is untested on X60. 1080p output works.
Anything beyond that is untested. If someone can confirm this (2560x1600 or
2560x1400 on VGA), that would be great.
