I have very bad exerience with picture quality, especialy in dark scenes.
Black level changes every second with lot of compression sqare effects.
Tested on Titanic scene 1 and 30. The picture quality is very good, no problems there. Duron 800MHz, 128MB, sound, video, 56k modem and network card combined with a 20Gb hard drive and a high quality 300 watt ATX case. Complete with keyboard, mouse and speakers.