We are not completely certain, but an x86 running at 400 MHz with 128 MB RAM should be adequate for versions 1.0.2 and below. For versions 1.1 and up we recommend a computer with at least 1 GHz and 512 MB RAM if you run KDE or Gnome as Windowmanager (The game itself needs about 100 MB RAM). Slower machines will have trouble scrolling large maps or processing AI turns with many units. See the forum thread about minimum and recommended system requirements.
Źródło: http://wiki.wesnoth.org/FAQ#A_new_versi ... etc..5D.3F