Lenovo zuk z1 comes with 3gb ram and 2.5 GHz quad-core processor and a 13 megapixel camera which is good and about gaming this phone is good for gaming.
And you can play high graphics games on it without any lag and about the design ithas the best design compared to other lenovo phones and a fingerprint lock which responses in .02 secs and supports fast changing also so according to me this phone is worth buying.