This Acer Aspire ES1-521 (UN.G2KSI.008) Notebook is powered by the AMD A-series processor that operates at a clock speed of 2 GHz. The 4 GB RAM further makes its performance glitch-free. The Acer notebook runs on the Windows 10 operating system. In addition to the 500 GB HDD, the Acer Aspire ES1-521 also comes with an expandable memory slot. You can use a SD card to store all your data without any hassle on the notebook itself. Moreover, there is an internal mic and a webcam that you can use for video calling as well. Also, the integrated graphic of the laptop gives wonderful display experience.