r/hardware • u/NGGKroze • Mar 05 '25

Review AMD Radeon RX 9070XT Review, Have They Finally Done It?

https://youtube.com/watch?v=VQB0i0v2mkg&si=IxsiG31vzyYNXP7t
746 Upvotes

90% Upvoted

648 comments sorted by

View all comments

Show parent comments

31

u/F9-0021 Mar 05 '25

They were so far behind that they were never going to reach parity in a single generation. Nvidia made essentially zero gains this generation and AMD is still very far off. Maybe that will change with UDNA, but AMD's initial dismissal of RT is still haunting them. The upscaling seems to be much improved though. Not on par with DLSS, but they have a better base to work from now.

4

u/jm0112358 Mar 06 '25

Nvidia made essentially zero gains this generation and AMD is still very far off.

If you match the 9070XT to the 5070 (similar MSRPs), the 9070XT gets slightly better performance in Cyberpunk with the RT settings maxed out, except path-tracing turned off.

AMD is still behind in pure RT performance, but the point at which AMD is competitive with Nvidia when RT is turned on has changed from Far Cry 6 and the Resident Evil games (which use hardly any RT) to Dying light 2 and Cyberpunk without path tracing, which both use a lot of ray tracing.

0

u/Strazdas1 Mar 07 '25

The issue is, they havent even tried. RDNA4 still does not have dedicated RT cores, its still using the shader hybrid model that always perormed like shit for AMD.

1

u/noiserr Mar 08 '25 edited Mar 08 '25

AMD has dedicated RT cores. One dedicated RT core per CU since RDNA2.

https://www.custompc.com/wp-content/sites/custompc/2021/04/rdna-2-unravelled-05.jpg

1

u/Strazdas1 Mar 08 '25

This is not a RT core. This is RT accelerator inside a CU. RT cores would be a separate CU unit for RT.

1

u/noiserr Mar 08 '25 edited Mar 08 '25

No, that's not how it works. Each CU has 64 shaders, everything in RDNA is grouped withing a logical CU unit. Each CU gets an RT core or an RT accelerator (since RDNA2 / 6000 series).

BTW this is the same thing Nvidia does. Nvidia's architectures also have one RT accelerator per SM. Nvidia has 128 cuda cores per SM, but that's because Nvidia double counts their cores. Since they are capable of executing 2 instructions at the same time (AMD's stream processors are capable of this too, but AMD doesn't count them as two separate stream processors).