i3-5020U is okay for light desktop use. My Lenovo Ideapad 100 (manufactured Q3 of 2016) runs on it. Keeping that in mind, this CPU is a bit outdated. It struggles with multiple browser tabs and apps open. If you use this CPU for nothing more for basic desktop then you'll be fine. [Aug '20krossblades]
We calculate effective speed which measures real world performance for typical users. Effective speed is adjusted by current prices to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top CPUs. [CPUPro]
Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.