Google Chrome Portable but consumes less ram and memory

Is there any app similar to Google Chrome Portable but consumes less RAM and memory?
Chrome Portable is currently like a regular chrome and consumes a lot of RAM, the download capacity is about 250 MB. And about more than 500 MB in use.
Is there a way to reduce these parameters to a significant extent and still be usable? I just used a lot of Google Chrome Portable to view and retrieve messages on Gmail and Twitter for our project.