ASUS today launched their 15.6-inch touch-enabled Ultrabook called the ViviBook S551. The device is powered by the competent NVIDIA GT 740M graphic processing unit which provides ample power for every application and side by side also includes Intel’s 4th generation Haswell based core processor. What a combination! We must say. With the mobile NVIDIA GT 740M it does not compromise on power and performance at all while taking care of the heat dissipation as well(important in case of thin UltraBooks).