This is a screen shot, from my recently completed screen saver project.
It can be downloaded from http://www.scene.org/file.php?file=/demos/groups/fluid/fld_sparcs-final.zip&fileinfo
The screen saver is 100% software rendered, Each particle system has 32,000 particles in it, a maximum of
2 particle systems can be displayed at any 1 time.
Screen saver settings include box-bluring and particle system color selection.
Hope you enjoy the screen shot, and screen saver.