seems to be only the current and last gen cards supports the AV1 decode
AV1 Decode Is Already Here But Encoding Is The New Trick
AV1 decoding is supported in hardware on
AMD RDNA 2 GPUs (outside of the Navi 24 based 6500 XT),
NVIDIA GeForce 30- and
40-Series GPUs, Intel Xe and Arc GPUs, along with mobile chips like the
Samsung Exynos 2100 and 2200, various
MediaTek Dimensity SoC’s, and
Google’s Tensor processor. Qualcomm is notably absent from this list but has indicated the codec will be supported in its
Snapdragon chips starting in 2023. Decoding support is great for content consumers, but without hardware encoding support, AV1 content is much scarcer.