### PlayStation 4 & AMD Radeon R9 290X GPU share the same 8 ACE ( Asynchronous Compute Engines )

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?

**"PS4 GPU**

has a total of 2 rings and 64 queues on 10 pipelines

- Graphics (GFX) ring and pipeline

- Same as R10xx
- Graphics and compute
- For game

- High Priority Graphics (HP3D) ring and pipeline

- New for Liverpool
- Same as GFX pipeline except no compute capabilities
- For exclusive use by VShell

- 8 Compute-only pipelines

- Each pipeline has 8 queues of a total of 64
- Replaces the 2 compute-only queues and pipelines on R10XX
- Can be used by both game and VShell (likely assign on a pipeline basis, 1 for VShell, and 7 for game)
- Queues can be allocated by game system or by middleware type
- Allows rendering and compute loads to be processed in parallel
- Liverpool compute-only pipelines do not have Constant Update Engines (presented in R10XX cards) "

to make a long story short

here is a comparison between the two systems side by side

**XBOX ONE GPU**:

1.18 TF GPU (12 CUs) for games

768 Shaders

48 Texture units

16 ROPS

2 ACE/ 16 queues

**PLAYSTATION 4 GPU**:

1.84TF GPU (18 CUs) for games + 56%

1152 Shaders +50%

72 Texture units +50%

32 ROPS + 100%

8 ACE/64 queues +300%

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