I was going to contribute but I feel well out of my depth. It's intimidating enough that a huge AAA developer talks tech, but when you have forum poster that know even MORE, it gets scary as hell.

Give this man a bloody medal!

You know what is scarier? People who have no self judgment and believe what reinforces their believes without analyzing if it can be true or not. It's sad that no PS fan has another PoV than believing it. I haven't seen one PS fan doubt this PR catchphrase.

Moderated,

-Mr Khan

The quote is from a guy at Guerrilla Games.

Then read the comments again...

Ethomaz, it can be a bottleneck if you want to use more than 8 GB of memory.

Bottlenecks aren't fixed things, bottlenecks change with what you want to do with your engine.

I will try to elaborate why there is no perfectly balanced system:

code you write for ps4 is written for fixed hardware which can't be changed. the hardware uses caches and ram to deliver data as fast as possible to the computing units as they are always held back by waiting for data. sony and ms try to reduce this with what they think will do so: sony gddr5-ram, ms move-units or other tricks which have yet to be reveiled. apu also helps, of course.
if you really want to use perfectly balanced hardware then you have to write your algorithms, bring it to hardware and make an asic of it. but this is not happening here and is also only done for special cases.
every component other than the computing units are a bottleneck for computing units. that's why caches grow and ram-speed and latency is also growing.
that does not mean ps4 is not powerful but far away from perfectly balanced and far away of 100% usage. the system itself doesn't allow for that, in every computer.

But that would probably be bad programming at this point of time. The way games operate at this time it would be hard to bottleneck the PS4.

so? What do you think 'AAA' refers to exactly?