Different type of ram

Solution
Depends how different. Some types are straight no, for example trying to mix DDR3 with DDR4 or non-ECC with ECC sticks. In other cases the answer is maybe, when the sticks differ only by speed/latency/manufacturer/size. Even when it is possible to mix different RAM, it's worth noting that the more sticks differ the more likely they will not work together.
Depends how different. Some types are straight no, for example trying to mix DDR3 with DDR4 or non-ECC with ECC sticks. In other cases the answer is maybe, when the sticks differ only by speed/latency/manufacturer/size. Even when it is possible to mix different RAM, it's worth noting that the more sticks differ the more likely they will not work together.
 
Solution