Lenovo's Y gaming series have gone a long way since the first notebook release and from now on, the OEM is branding its mid-range gaming laptops "Legion". In this review, we will investigate how the 15-inch version has matured in terms of design, build quality, cooling system, performance, etc. But for the first time ever, the 15-inch version will sell for a significantly lower price than before and more importantly, the Legion Y520 offers an IPS panel opposed to Dell's and Acer's similarly-priced gaming solutions - the Inspiron 7567 and the Aspire VX 15 (VX5-591G), respectively. However, we remain skeptical of the Y520's cooling solution because it had some problems in the past including thermal throttling under heavy load and even overheating on the surface of the interior. Regard[...]