Okay so one of the main things I've seen spec wise thrown around is that the PS4 has GDDR5 ram and the Xbox One only has DDR3. Now from what I've heard the GDDR5 is better but this what ponders me. I've recently built my first computer, when building it I figured, hey everyone is saying GDDR5 is better so I'll get that for ram instead of DD3. Well I came to find out that GDDR5 is only on the GPUs so I'm confused because in a computer the motherboard can only use DDR3 and the GPU uses GDDR5 so does the PS4 not have any system ram? I'm confused and would be very helpful if someone could explain this to me