Latest GSDx has a scaling option, which is beautiful... I think he means that.

If you're using the GSDx from the beta package, make sure 8-bit textures option is turned off (it was turned on by default when it really shouldn't have been, that's been fixed in the newer versions)

Is the scaling option available for GSD10 Hardware? i don't see it... also the 8-bit textures option has no known effect on the game.