PS4 has "50% more raw power" in graphics than Xbox One, says report

[justinian]

Is there a significant performance increase with the PS4 GDDR5 over Xbox 1's DDR3?

What I mean is would the difference be noticed in the real world?

Does this memory play a big part in the alleged "50 percent"?

I am no techy expert and most of the stuff I read about the whole thing left me more confused than when I started.