Specs under the hood here are rumored to be a quad-core SoC with 2GB of RAM and presumably a bit of internal storage for apps. Chromecasts aren’t generally high-end pieces of hardware so don’t expect something like the NVIDIA Shield, but there should be enough storage to handle your suite of preferred streaming apps with some headroom. 4K HDR support is also a given.
Google Chromecast plugs into your TV and grants easy access to multiple streaming services, from Netflix and YouTube to Google Play. Use this FAQ to get up to speed on Google Chromecast and decide if it’s right for you.