Asus vivobook 15 amd ryzen 3 3250u July 8, 2019 16 32 64 128 Asus vivobook 15 amd ryzen 3 dual core amd r3 3250u Asus vivobook 15 x512da ryzen 3 3200u Asus vivobook 15 i3 11th generation Asus vivobook 15 3500u Amd ryzen 3 3250u 8gb