The so-called Ray Accelerators (RAs) belong to the GPUs of the Radeon RX 6000 graphics cards. You are part of the Compute Unit. Each of these blocks contains an RA accelerator.
The job of accelerators is to handle ray tracing in games. This hardware feature is also present in the graphics subsystem of the next generation game consoles, which are based on the RDNA 2 architecture.
The GPUs of the Radeon RX 6900 XT, RX 6800 XT and RX 6800 graphics cards contain 80, 72 and 60 execution units and the same number of ray tracing hardware units. source VideoCardz unearthed data on their performance:: AMD has tested the Radeon RX 6800 XT with RA 72 with the so-called procedural geometry, which is part of the Microsoft DXR SDK. This allowed us to compare the performance of the hardware ray tracing feature in RDNA 2 to the way NVIDIA graphics cards deal with such operations. And this comparison does not speak for the AMD graphics card.
“Based on technical measurements on August 17, 2020 and an AMD RDNA 2-based graphics card in the procedural geometry application of the Microsoft DXR SDK, this process was accelerated 13.8 times faster with ray processing hardware using ray processing hardware will. As a result, the card showed a result of 471 frames per second. When using the DXR software, the result of the graphics card at the same operating frequencies was 34 frames per second. The performance may vary. ” VideoCardz cites AMD as saying.
One of the users on the Reddit forum checked the ray tracing performance of his ASUS GeForce RTX 3080 TUF graphics card in the same test and got a result of 630 frames per second:
Resource VideoCardz also used Microsoft XDR SDK to test its GeForce RTX 3080 with the reference frequency values and get the result in 635 frames. From this we can provisionally conclude that the Radeon RX 6800 XT processes ray tracing about 25% more slowly than the GeForce RTX 3080 in this particular test. However, important clarifications must be made here. AMD did not specify the resolution settings at which the XDR was tested, so the test for the GeForce RTX 3080 was performed with the default settings.
According to the results published by Wccftech Editor Hassan Mujtaba, the reference GeForce RTX 3090 reached 749 fps in the same test. This makes this card 59% faster than the Radeon RX 6800 XT in DXR.
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