Sony PS5 has 2304 RDNA2 GPU cores with ray-tracing - less powerful than Xbox Series X

Posted on Thursday, March 19 2020 @ 15:37 CET by Thomas De Maesschalck
If consoles are your thing, TechPowerUp has an overview of the PlayStation 5 specifications over here. Some key take-aways are that the console will have an AMD Zen 2-based CPU with a boost frequency of up to 3.5GHz, an RDNA2-based graphics solution with ray tracing support, up to 2.23GHz engine clock, 36 CUs, 2304 shaders, and 16GB GDDR6. The storage side features a beefy 825GB PCIe 4.0 x4 SSD with 5.5GB/s transfer speeds.

The GPU has a maximum computing power of 10.3 teraflops, which is less than the 12 teraflops listed on the spec sheet of the upcoming Xbox Series X from Microsoft.
Sony also shed some "light" on the hardware-accelerated real-time ray-tracing approach AMD is taking with RDNA2. Apparently, each compute unit features a hardware component called "Intersection Engine," with roughly the same function as an RT core on NVIDIA "Turing," which is to calculate the intersection of rays with geometry (such as triangles or polygons) in a scene. This combines with a fairly standardized bounding volume hierarchy (BVH) model to achieve a hybrid of ray-traced elements in an otherwise conventional rasterized 3D scene (pretty much where NVIDIA is right now with RTX). On PlayStation 5, RDNA2's ray-tracing hardware is leveraged for positional audio, global illumination, shadows, reflections, and full ray-tracing.




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