Acer 21.5" AIO Computer NVIDIA Quad-Core 2.1GHz, 4GB RAM, 16GB,Chrome OS Webcam (Certified Refurbished) This Certified Refurbished product is certified factory refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty. Super fast NVIDIA Tegra K1 2.1 GHz Quad-core Processor Sporting 4 GB of DDR3 SDRAM and 16 GB Steady State Hardrive you will have plenty of memory to accelerate your tasks A 21.5" Display will help to increase the quality of your overall viewing experience With a Chrome OS, be prepared to be working at the highest speeds