Assalam o alikum

Umeed hai aap sab kheryat se honge
mujhe apne net cafe k tamam computero me game chalane k liye video card
lagane hai lekin mere aik dost ne mujhe bataya k aik device aisa aata hai jo agar aap laga le to aap ko sab computer me video card nahi lagana parrega bal k aik hi device se aap sab computer me game chala sakenge

mujhe us device k baare me maloomat chahiye k wo kaise kaam karta hai?
kya wo device lagana behtar hoga ya phir sab pc me video card lagaoon?
aur us ki pak me price kya hai