This information applies to the latest version
In version 4, you can enable the display of legacy noise reduction algorithms in the preferences window by selecting the option "Processing technologies." This will allow you to use DxO High Quality (HQ) and PRIME noise reduction alongside DeepPRIME and DeepPRIME XD2s.
Starting with version 5, we have streamlined the noise reduction options to focus on our most advanced technologies, DeepPRIME 3 and DeepPRIME XD2s/XD3 X-Trans. This change reflects user preferences, as the legacy HQ and PRIME options were rarely used. By concentrating on our latest innovations, we ensure the best possible image quality and processing efficiency.
For more information about which algorithm is supported in each version, please click this link.