Rating

I have a Sony Hi-Fi system that I bought long ago. It has 2 speakers along with the Hi-Fi system body (which has the tuner and the cassette slots) to which the speakers are connected. Recently the circuit in the hi-fi system was damaged, but the speakers work fine. The System is Sony CFS-715S...

i5-4210H 2.9-3.5GHz GTX 850M 4VRAM DDR3 4GB DDR3 RAM Would it be better if i upgraded to 8GB RAM? And what would be the difference in terms of playing the latest games from 4GB to 8GB? A rate of 1-10 would be appreciated, thanks guys ^.^