16GB matched vs 32 GB unmatched

[DAS]

Hi

I am look to upgrade my PC and wanted some advice on RAM. I have never noticed real world differences with RAM speeds like I do with GPUs or storage.

I am working on the basis that 32GB of new RAM is overkill, so was going to get 2 new 8GB sticks. However, I already have 2 other 8GB DDR4 sticks and I know that mixing unmatched sets is not recommended.

My question is :

If I added my existing 16GB to the new 16GB, would I see better overall performance from 32GB of mixed RAM compared to just the new 16GB matched pair. That assumes DDR4 – what about if the new pair were DDR5?

If I went with the unmatched 32GB, could I enable XMP?

Thanks

 

[DAS]

Thanks for the replies. I realise that you cannot mix DDR4 and DDR5, my almost rhetorical question was whether 32GB of mixed DDR4 would be better than 16GB of DDR5. I accept that the best solution is to buy new memory (16 or 32), though I won't get much for my od RAM.

Thanks

 

[DAS]

Thanks to everyone for their very helpful replies. It's clear now that I am going to get 2 new 8GB sticks. Whether I go for DDR4 or DDR5 depends on the costs and specs of the other components in the upgrade.

David