Newly leaked slides from AMD's new Radeon R9 290X Hawaii GPU reveals that the Volcanic Islands GPU will also feature 8 Asynchronous Compute Engines much like the Liverpool GPU inside of Sony's new PS4.
Each of the 8 ACE's can manage up to 8 compute queues for a total of 64 compute commands, in comparison the HD 7970 only has 2 ACE's that could only queue 2 compute commands for a total of 4 & the Xbox One only has 2 ACE's but they also manage up to 8 compute queues for a total of 16 compute queues.
Could this mean that the PS4's GPU is also a part of AMD's Volcanic Islands family?
Below is a diagram of the PlayStation 4 Compute, Queues and Pipelines from VGleaks
"PS4 GPU has a total of 2 rings and 64 queues on 10 pipelines