Do you have to use a separate app for that or something? I didn't see any Intel option in Daz. I did find some commercial apps that use the Intel denoiser. I would bet that Nvidia's version will continue to improve as well considering how critical it is for their implementation of ray tracing. Their ray tracing before denoiser looks about like a scene in daz does after rendering for like 5 seconds.
Yes, it's separate app, you can read/download it further here:
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For NVidia (CUDA-based):
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Related Daz3d forum thread:
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IMO, the results from NVidia's look like dollish/plastiqy, Intel's on the other hand retain more details.