Photon can extract the following data while crawling:
Control timeout, delay, add seeds, exclude URLs matching a regex pattern and other cool stuff. The extensive range of options provided by Photon lets you crawl the web exactly the way you want.
Photon's smart thread management & refined logic gives you top notch performance.
Still, crawling can be resource intensive but Photon has some tricks up it's sleeves. You can fetch URLs archived by archive.org to be used as seeds by using --wayback option.