Serving super fast rss feed links in wordpress

Hi there.

I have a busy site with at least two post a day.

I also have loads of websites that pull from my rss feed and killing the CPU usage.

Currently using "WP Super Cache" plugin but it don't seem to do the job.

Is there any other way or plugin that you can suggest that speeds up your rss feed that is serves faster. Some of these other Super Cache plugins is so complicated that I don't have a clue with them.