The Great Suspender for Chrome helps you curb system resource consumption effectively by suspending individual unused tabs.
Once you have The Great Suspender for Chrome installed and enabled, it automatically suspends the tabs that have not been used for a while, freeing up the memory and CPU that those idle tabs were consuming.
The Great Suspender for Chrome Features and Benefits:
Unload, park, suspend tabs to reduce the memory footprint of Chrome
Tabs can auto-suspend after a configurable period or suspend manually.
Tabs can be whitelisted to avoid automatic suspension. Suspended tabs are retained after closing and reopening the browser, preventing many tabs from reloading after a restart.