AMD Ray Accelerator appear to be slower than NVIDIA RT Core in this DXR (Ray Tracing) benchmark

Published: 28th Oct 2020, 20:51 GMT   Comments

AMD Radeon RX 6800XT ray tracing performance

AMD has not been eager to share details on the ray tracing performance of its Radeon RX 6000 series at launch, but as it turns out, the manufacturer has revealed some details that can be directly compared to the NVIDIA Ampere series.

AMD Radeon RX 6000 series feature Ray Accelerators. Each Compute Unit carries one Accelerator:

These units are responsible for the hardware acceleration of ray tracing in games. The RX 6900XT features 80 RAs, RX 6800XT features 72, and RX 6800 has 60. The same Ray Accelerators can be found in RDNA2 based gaming consoles.

Radeon RX 6000 vs GeForce RTX 30
VideoCardz.comRay Tracing CoresDXR PerformanceTensor Cores
NVIDIA GeForce RTX 3090
 
82
 
749 FPS
 
328
NVIDIA GeForce RTX 3080
 
68
 
630 FPS
 
272
NVIDIA GeForce RTX 3070
 
46
not tested
 
184
AMD Radeon RX 6900XT
 
80
not tested
AMD Radeon RX 6800XT
 
72
 
471 FPS
AMD Radeon RX 6800
 
60
not tested

The Radeon RX 6800XT has 72 RAs while GeForce RTX 3080 has 68 RT Cores. AMD has conducted tests using Microsoft DXR SDK tool called ‘Procedural Geometry

AMD:

Measured by AMD engineering labs 8/17/2020 on an AMD RDNA 2 based graphics card, using the Procedural Geometry sample application from Microsoft’s DXR SDK, the AMD RDNA 2 based graphics card gets up to 13.8x speedup (471 FPS) using HW based raytracing vs using the Software DXR fallback layer (34 FPS) at the same clocks. Performance may vary. RX-571

A Redditor NegativeXyzen tested ASUS RTX 3080 TUF performance and reported an average framerate of 630:

We have also ran the benchmark on the GeForce RTX 3080 with stock clock and power targets using a precompiled executable file. The RTX 3080 scored 635 framerate on average from three 1 minute runs.

This means that GeForce RTX 3080 is around 33% faster than Radeon RX 6800 XT in this particular benchmark. Of course, there are few things that need to be taken into the account such as the testing platform and DXR benchmark resolution (AMD did not clarify the resolution, hence we used a default one).

NVIDIA GeForce RTX 3080 DXR performance, CapFrameX,  i7-8700K @ 5.0 GHz, DDR4-3200

The stock GeForce RTX 3090 has a framerate of 749, according to the screenshot posted by Hassan Mujtaba (Wccftech). This means that RTX 3090 is 59% faster than AMD RX 6800XT in this DXR test.

NVIDIA GeForce RTX 3090 DXR performance, Source: Hassan Mujtaba (Wccftech)

Source: AMD (footnotes), Microsoft DX12 Graphics Samples, Precomplied EXE




Comment Policy
  • Comments must be written in English.
  • Comments deemed to be spam or solely promotional in nature will be deleted. Including a link to relevant content is permitted, but comments should be relevant to the post topic.
  • Comments containing language or concepts that could be deemed offensive will be deleted. Note this may include abusive, threatening, pornographic, offensive, misleading or libelous language.
  • Comments complaining about the article subject or its source will be removed.
  • A failure to comply with these rules will result in a warning and, in extreme cases, a ban.
  • Please note that comments that attack or harass an individual directly will be deleted and such comments will result in a ban.
  • VideoCardz Moderating Team reserves the right to edit or delete any comments submitted to the site without notice.
  • If you would like to appeal for a comment section ban to be removed, please use this page.
  • If you have any questions about the commenting policy, please let us know through the Contact Page.
Hide Comment Policy
Comments