I was thinking some of this was interesting.
So while the X1 gets 204GB/s to the GPU and 30GB/s to the CPU with low latency the PS4 gets 176 to the GPU and 20 to the CPU with high latency. Everyone is making a big deal about the GDDR5 (mostly due to lack of knowledge) but the funny fact is the xbox 360 gets 268GB/s to its GPU which is more bandwidth then the PS4 and the X1. Yet nobody says the 260 is the more powerful then the PS4 or X1. (further proof it isn't all about the RAM) it did this using GDDR3 RAM (yup 360 has GDDR RAM) and 10MB eDRAM. the PS3 uses 256MB of XDR Ram for its CPU (which is a high performance RAM up to 230GB/s with a low latency and another 256 of GDDR3 RAM for its GPU.
TL:DR the Ram bandwidth is as follows 360, PS3, X1, PS4 so next time someone tries talking about RAM making the PS4 more powerful, they are basically saying that the 360 and PS3 are more powerful then the next gen versioins ;)