After reading this from the patent,

*12. A graphic processing unit (GPU) comprising:*

at least one processor core adapted to execute a software-implemented shader; and

at least one hardware-implemented ray tracing unit (RTU) separate from the processor core...
One would assume the RTU is some kind of new unit not present in the PS5.

But first, you have to ask yourself what is a processor core.

The only thing a processor core would be on AMD GPU is the ALU.

So understanding this, technically the RT on the PS5 is separate from the ALU.

On PS5 within a CU, you have 4 ALI's (SP) and 2 Interaction Engines (RA).

In the patent, you can see 4 Processor Cores (ALU) and 2 Interaction Engines (RA).

From Road to PS5

*"The CUs contain a ***new specialized unit** called the **Intersection Engine** which can calculate the intersection of rays with boxes and triangles."
That new specialized unit is obviously the Ray Tracing Unit (RTU), which is also called the Intersection Engine.

I think we misuse dedicated when it comes to AMD and Nvidia.

Ampere GA102

Each Texture Processor Cluster (TPC), contains 2 Streaming Microprocessors (SM). Each SM contains (ALU, TMU, RT, Tensor)

RDNA 2 GFX1030

Each Shader Array (SA), contains 5 Work Groups (WGP). Each WGP contains (ALU, TMU, RT). Only thing missing is the Tensor Cores.

AMD RT is just as dedicated as Nvidia's RT, Just Nvidia's is more performant.