I am using both GD and Curl(one or other) for downloading remote jpeg images to my server. I just want a quick suggestion on which method to use? Which method takes less system resources?
To get load time try to create complex image with both of them (GD and CURL), set microtime at the start of each operation and calculate time-difference at the end. Just do a test at your own.
About memory usage (system resources), I'm not so sure, but I think there's no such big difference.
For me personally, GD and Curl are equal.