This 8GB RAM is 100% compatible with the ASRock B850M-X WiFi. Information regarding memory configuration: The following technical specifications should be considered in advance: The device can accommodate non-ECC or ECC (Error-Correction-Code) RAM. Modules labelled as ECC have error correction capabilities. Non-ECC memory modules cannot be mixed with ECC memory. If a memory upgrade is to be carried out alongside the existing RAM, it must be checked which memory technology (non-ECC / ECC) is currently in use.