From the spec sheet doc:
"The Graphics Processing Unit (GPU) has been enhanced in a number of ways,
principally to allow for easier use of the GPU for general purpose computing (GPGPU) such as
physics simulation. The GPU contains a unified array of 18 compute units, which collectively
generate 1.84 Teraflops of processing power that can freely be applied to graphics, simulation
tasks, or some mixture of the two.
PS4 is equipped with 8 GB of unified system memory, easing game creation and
increasing the richness of content achievable on the platform. GDDR5 is used for this memory,
giving the system 176 GB/second of bandwidth and providing a further boost to graphics
performance."
@bolded. Just wow. This is pretty much a 7870 gpu. Thats amazing. Also rumours about a 14+4 GCN split were either wrong or the split wont have an effect on developers deciding how to use their resources. Also if the next box is really limited to 12 GCN then there is going to be a serious gap between the consoles.