When someone comes out and says that memory doesn't need to be fast because the processor is fast, you know it's fake. Memory needs to be able to send and receive data fast enough, to keep the processor fed.
Also this leak guy is saying the CPU is 30% faster than PS4 and XB1, which is it? XB1's CPU runs at 1.75Ghz and PS4's is 1.6GHz.
Same thing with the GPU differences compared to PS4 and XB1, as Barkley said. 50% faster than XB1, isn't 50% faster than PS4's GPU.
The only ways that 12GBs of memory make sense, is either if Nintendo are using 8GBs of DDR3 memory and 4GBs of something faster like HBM or GDDR5 or GDDR5X. 12GBs of DDR3 with some kind of cache like 64MBs of eSRAM or eDRAM (because you'd need more than 32MBs for a faster GPU).
Finally 12GBs of all GDDR5 or GDDR5X, because that would provide ample bandwidth and storage.
The latter memory set-up makes for the simplest to develop for.
This NEX rumor sounds completely fake.
