A:Answer This is what the 'newegg.com' website says about the HTC Vive, so I doubt the Lenovo 520 in this regard, but I'm not a gamer:
"Unlike normal PC games that will run on lower frame rates, both the Rift and Vive require a constant 90 FPS to work their VR magic and keep people from becoming motion sick. So while Oculus says a GTX 970 is the "recommended" graphics card, it's really the minimum if you want a legitimate VR experience."