Setup cache time
Setup Speed Cache time (static cache) duration separately from the Joomla cache
Cache per user
On dynamic websites, generate a static file per user to serve the proper content
Auto clean from admin
The cache can be cleaned automatically on admin actions: save, apply, publish, unpublish or trash a content
The performance is very important for SEO, Google measure the user page loading time, so it helps for real!
Speed Cache is fully based on Joomla framework. It has the double advantage of being light and 3rd party compatible