Nah they come internally, never seen anything like that.
more like this
http://www.bestbuy.com/site/asus-rog...=buyingOptions
GeForce GTX 880M
GeForce GTX 880M brings elite, next-generation graphics performance to serious gaming notebooks. The new gaming heavyweight, GTX 880M delivers extremely fast and fluid gameplay at the highest settings and resolutions in a lightweight and portable design. With innovative NVIDIA technologies such as PhysX®, TXAA™, ShadowPlay™, and Battery Boost, gaming with a GeForce GTX 880M means you get a full feature set and stunning performance that lasts as long as you want to play.
Full set of features as a desktop Graphics card.