Save Time in Data entry of products
Create templates / list of attributes you use mostly and save them as template and then just on single click load it in attribute tab in product edit form instead of adding attribute one by one .
You can create separate templates for your any category of products
e.g Laptops have ram , harddisk and cpu attributes in common and you every time add these one by one in each new product you add.
By creating a template for laptops you can just load template instead of adding attribute one by one.