What is the cheapest video card that can run NS2 properly (by that I mean no stutters) on high settings at 1920x1200. I won't go over 300$ considering the prices in my country are about a quarter more than what you see on newegg.com. Right now I have a HD 4870 1GB and an i7 4770 and 8GB ram. I am happy with it but I'd like something newer and more power efficient (I browse and read a lot when not gaming, my card is like a radiator sometimes...). Going to a gtx 650 or hd 7770 would be a downgrade imho. I couldn't find updated charts by power consumption and heat.