Mozilla says the Firefox Quantum browser is twice as fast as Firefox 52. It is able to use the Rust language to rebuild the components to improve the speed of the browser, these components are now more efficient. The Firefox history version runs only on a single CPU core, but in Quantum and later it will take advantage of multiple CPU cores to make the browser faster.
By using the new CSS engine written by Rust, Firefox can use multiple CPUs in parallel to shorten the load time, and Mozilla claims that no other browser can do this. To further improve the speed, Mozilla will be the user to open the tab in the first place, and the use of multi-process architecture. Firefox Quantum on some sites open faster than Chrome, while using the memory by 30%. The team also fixed 468 browser problems, which could lead to a rise in speed.