This 8GB memory is 100% compatible with HP ENVY All-in-One 27-cp0950nz.
The following technical specifications should be considered in advance:Non ECC or ECC (Error Correction Code) RAM memory can be installed in the device. Modules with the designation ECC have error correction.Non ECC memory modules cannot be mixed with ECC memories.If a memory expansion is to be made with the already existing RAM memories, it must be checked which memory technology (non ECC / ECC) is available.The unit supports non ECC SO-DIMM or ECC SO-DIMM. Memory modules with the identifier ECC have an error correction code.Non ECC memory modules cannot be operated together with ECC memories.If a memory expansion is to be made with the already existing RAM memories, it must be checked which memory technology (non ECC / ECC) is present.