Join / Sign In CNET editors pick the products and services we write about. When you buy through our links, we may get a commission. Asus ROG Flow X13 with XG Mobile review: Almost the best of both worlds Asus' clever approach to marrying gaming and working in a lightweight laptop-plus-eGPU system makes a good start. Listen - 06:24 Lori Grunin/CNET Many people like their work laptops tiny and light and their gaming laptops screamingly fast and crammed with the latest technology. Sadly, the laws of physics conspire to keep us from getting both in a single device, but Asus gives it a shot with the combination of its ROG Flow X13, a 13-inch, 2.9-pound two-in-one laptop, and the XG Mobile, a compact external-GPU-plus-dock combo device. The power pairing of the new eight-core AMD Ryzen 9 5900HS processor in the laptop and Nvidia GeForce RTX 3080 mobile GPU in the external module combine to deliver a multifaceted, fast system that's imperfect, but still much more than the sum of its parts.