Their headquarter is located in Santa Clara, California state of America. The company is known for their gamer-orientated GeForce GPUs/graphics cards, their workstation-orientated Quadro GPUs/graphics cards, their GPGPU-orientated Tesla GPUs and recently, their Tegra mobile SoCs.
In addition, Nvidia also released the Nvidia Shield gaming handheld as well.
See Also
GeForce - Nvidia's gaming-orientated GPU products
Quadro - Nvidia's workstation-orientated GPU products
Tesla - Nvidia's General-proposal GPU products
Tegra - Nvidia's mobile SoCs for smartphones and tablets
Nvidia Shield - Nvidia's mobile gaming brand for handhelds and tablets, powered by Nvidia Tegra SoC