I don't get MS's plan, announcing this early, Scrap NEO? PS5 in 2018?

[Ganoncrotch]

drkohler said:

Fei-Hung said:
On a similar note, they said 320GB/s bandwidth. The PS4 is around 176GB/s I think. Can anyone guess any RAM specs from this?

There are variuos roads that lead to that value. Coincidentally, the NVidia 1080 has a 256bit wide GDDR5X bus that leads to that value. Being the next generation, I'd suppose MS would want to add some more memory than the existing 8G. So you can get to the 320GB/s using a 320bit GDDR5 bus or a 384bit GDDR5 bus. The first option gets you to 10GB of memory, the second one gets you to 12GB of memory. At some point you pay too much for chips and die space for the gddr5 interface (which is very hard to shrink, and look at the space it takes on the PS4 die!) so I'd guess a 512bit bus is off limits.

My second guess is that the 320GB/s bus excludes any further use of embedded esram as that would be wasted space and costs on the die.

Don't forget as well that it won't be appearing for another 18 months, they could well be just putting down a plan of specs on a sheet of paper right now (along with some fancy cgi images of a PCB lol) but yeah there is every likelyhood that they're not intending to get that level of power and bandwidth with the very best of what there is on offer in 2016 but more likely they'll aim to achieve it with middle of the road tech in 2017.