BUY YOUR USED LAPTOP. Asus ROG Zephyrus GX501 review: Nvidia Max-Q makes it incredibly thin and powerful Credit: IDG/Gordon Mah Ung At a Glance Asus ROG Zephyrus GX501 PCWorld Rating View The Asus Republic of Gamers (ROG) Zephyrus GX501 had us at "GTX 1080 graphics in a five-pound laptop that's almost as thin as a MacBook Pro 15 ." Pound for pound, this is the most powerful portable gaming laptop on earth today. But to get this much performance in a laptop this portable, some big compromises have been made. IDG/Gordon Mah Ung How thin? That's an Alienware 15 R4 on the left with the Asus ROG Zephyrus GX501 in the middle and a Dell XPS 15 on the right. What's inside Inside the GX501 is none other than Intel's 7th gen Core i7-7700HQ. For RAM, Asus equipped our review unit with 24GB of DDR4/2400, but note that U.S. versions will actually max out at 16GB of RAM. The highlight of the GX501 is the GPU: Nvidia's GeForce GTX 10