Opera GX portable is a full-featured version of the Opera browser developed specifically to complement games. The browser is packaged as a portable application and is available on PortableApps.com. It is a free gaming web browser for both personal and commercial use.
Opera GX is a special version of the Opera browser created specifically to complement your hours of play. The browser has few unique features to help you get the most out of your games and browsing.
GX Control allows users to set the limits on the amount of RAM, CPU, and network usage of the browser. The network limiter allows users to set maximum limits (upload and download) on the amount of bandwidth on the network.
Opera GX will stick to that limit, which means that the games or streaming services outside the browser will run more smoothly with the largest network bandwidth at your disposal, it also includes gaming themes and CPU & RAM limiter.
To use this more effectively users must log in to Opera and sync data to keep passwords and some other data while working on PC.