Does ImageMagick uses more ram over PHP's gd image library

[lovelf]

I don't know which one to use because I am afraid Image Magick might take too much memory, I already worked on a filter program for the web which had about 30 im filters but I noticed it takes about 1 gb of ram every time a picture is filtered so I'm worried about keeping the resize functionality for photos, does anyone know if it would take much more memory than what php's bundled library takes.