If you like to use many open Tabs at once - this extension will help you.
Extension suspend, park, hibernate inactive tabs and save up to 80% of memory. Unloading tabs will free memory and reduce load on the device, saving battery and less heat.
Speeds Up Chrome: Suspended tabs don't consuming processor resources.
With this extension Chrome consumes in 3-5 times less memory with suspended tabs against normal.
Do not need to close unused tabs manually.