A:Answer I bought a Nvidia GTX 1080 FE the same day i bought my ASUS G20CB Fits nicely and runs VERY well. been playing on it for a month and a half at 1080p and even 2x DSR (with games ranging from GTA5, DOOM both OpenGL and Vulkan, Rise of the Tomb Raider, and just recently Mass Effect Andromeda) with solid performance!. The Dual Powersupply brick that is included works as it should, providing power to both the unit and the GFX card! i even installed an SSD and still have not had ANY issues whatsoever! JUST MAKE SURE Both Power connectors are snuggly installed. if you only have one Power connector installed, you wont get any signal from the GFX card.