Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
I chose my nvidia graphics card under computing device in user settings and saved the settings but when I render and check my task manager almost all my cpu is being used by blender. What is going on?
You need to enable GPU rendering in the properties panel.
Also, make sure you're using cycles, not blender internal.